diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 00000000..ccb2431d
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,11 @@
+{
+    "printWidth": 100,
+    "arrowParens": "avoid",
+    "bracketSpacing": true,
+    "singleQuote": true,
+    "semi": true,
+    "trailingComma": "all",
+    "tabWidth": 4,
+    "useTabs": false,
+    "bracketSameLine": false
+}
diff --git a/api/types.go b/api/types.go
index 23d4dd1f..a6b56035 100644
--- a/api/types.go
+++ b/api/types.go
@@ -158,7 +158,7 @@ type MultiTokenValue struct {
 
 // Token contains info about tokens held by an address
 type Token struct {
-	Type             bchain.TokenTypeName `json:"type"`
+	Type             bchain.TokenTypeName `json:"type" ts_type:"'XPUBAddress' | 'ERC20' | 'ERC721' | 'ERC1155'"`
 	Name             string               `json:"name"`
 	Path             string               `json:"path,omitempty"`
 	Contract         string               `json:"contract,omitempty"`
@@ -263,7 +263,7 @@ type Tx struct {
 	FeesSat                *Amount           `json:"fees,omitempty"`
 	Hex                    string            `json:"hex,omitempty"`
 	Rbf                    bool              `json:"rbf,omitempty"`
-	CoinSpecificData       json.RawMessage   `json:"coinSpecificData,omitempty"`
+	CoinSpecificData       json.RawMessage   `json:"coinSpecificData,omitempty" ts_type:"any"`
 	TokenTransfers         []TokenTransfer   `json:"tokenTransfers,omitempty"`
 	EthereumSpecific       *EthereumSpecific `json:"ethereumSpecific,omitempty"`
 	AddressAliases         AddressAliasesMap `json:"addressAliases,omitempty"`
diff --git a/blockbook-api.d.ts b/blockbook-api.d.ts
new file mode 100644
index 00000000..adb058e7
--- /dev/null
+++ b/blockbook-api.d.ts
@@ -0,0 +1,412 @@
+/* Do not change, this code is generated from Golang structs */
+
+export interface APIError {
+    Text: string;
+    Public: boolean;
+}
+export interface AddressAlias {
+    Type: string;
+    Alias: string;
+}
+export interface EthereumInternalTransfer {
+    type: number;
+    from: string;
+    to: string;
+    value?: string;
+}
+export interface EthereumParsedInputParam {
+    type: string;
+    values?: string[];
+}
+export interface EthereumParsedInputData {
+    methodId: string;
+    name: string;
+    function?: string;
+    params?: EthereumParsedInputParam[];
+}
+export interface EthereumSpecific {
+    type?: number;
+    createdContract?: string;
+    status: number;
+    error?: string;
+    nonce: number;
+    gasLimit?: string;
+    gasUsed?: string;
+    gasPrice?: string;
+    data?: string;
+    parsedData?: EthereumParsedInputData;
+    internalTransfers?: EthereumInternalTransfer[];
+}
+export interface MultiTokenValue {
+    id?: string;
+    value?: string;
+}
+export interface TokenTransfer {
+    type: string;
+    from: string;
+    to: string;
+    contract: string;
+    name: string;
+    symbol: string;
+    decimals: number;
+    value?: string;
+    multiTokenValues?: MultiTokenValue[];
+}
+export interface Vout {
+    value?: string;
+    n: number;
+    spent?: boolean;
+    spentTxId?: string;
+    spentIndex?: number;
+    spentHeight?: number;
+    hex?: string;
+    asm?: string;
+    addresses: string[];
+    isAddress: boolean;
+    isOwn?: boolean;
+    type?: string;
+}
+export interface Vin {
+    txid?: string;
+    vout?: number;
+    sequence?: number;
+    n: number;
+    addresses?: string[];
+    isAddress: boolean;
+    isOwn?: boolean;
+    value?: string;
+    hex?: string;
+    asm?: string;
+    coinbase?: string;
+}
+export interface Tx {
+    txid: string;
+    version?: number;
+    lockTime?: number;
+    vin: Vin[];
+    vout: Vout[];
+    blockHash?: string;
+    blockHeight: number;
+    confirmations: number;
+    confirmationETABlocks?: number;
+    confirmationETASeconds?: number;
+    blockTime: number;
+    size?: number;
+    vsize?: number;
+    value?: string;
+    valueIn?: string;
+    fees?: string;
+    hex?: string;
+    rbf?: boolean;
+    coinSpecificData?: any;
+    tokenTransfers?: TokenTransfer[];
+    ethereumSpecific?: EthereumSpecific;
+    addressAliases?: { [key: string]: AddressAlias };
+}
+export interface FeeStats {
+    txCount: number;
+    totalFeesSat?: string;
+    averageFeePerKb: number;
+    decilesFeePerKb: number[];
+}
+export interface ContractInfo {
+    type: string;
+    contract: string;
+    name: string;
+    symbol: string;
+    decimals: number;
+    createdInBlock?: number;
+    destructedInBlock?: number;
+}
+export interface Token {
+    type: 'XPUBAddress' | 'ERC20' | 'ERC721' | 'ERC1155';
+    name: string;
+    path?: string;
+    contract?: string;
+    transfers: number;
+    symbol?: string;
+    decimals?: number;
+    balance?: string;
+    baseValue?: number;
+    secondaryValue?: number;
+    ids?: string[];
+    multiTokenValues?: MultiTokenValue[];
+    totalReceived?: string;
+    totalSent?: string;
+}
+export interface Address {
+    page?: number;
+    totalPages?: number;
+    itemsOnPage?: number;
+    address: string;
+    balance?: string;
+    totalReceived?: string;
+    totalSent?: string;
+    unconfirmedBalance?: string;
+    unconfirmedTxs: number;
+    txs: number;
+    nonTokenTxs?: number;
+    internalTxs?: number;
+    transactions?: Tx[];
+    txids?: string[];
+    nonce?: string;
+    usedTokens?: number;
+    tokens?: Token[];
+    secondaryValue?: number;
+    tokensBaseValue?: number;
+    tokensSecondaryValue?: number;
+    totalBaseValue?: number;
+    totalSecondaryValue?: number;
+    contractInfo?: ContractInfo;
+    erc20Contract?: ContractInfo;
+    addressAliases?: { [key: string]: AddressAlias };
+}
+export interface Utxo {
+    txid: string;
+    vout: number;
+    value?: string;
+    height?: number;
+    confirmations: number;
+    address?: string;
+    path?: string;
+    lockTime?: number;
+    coinbase?: boolean;
+}
+export interface BalanceHistory {
+    time: number;
+    txs: number;
+    received?: string;
+    sent?: string;
+    sentToSelf?: string;
+    rates?: { [key: string]: number };
+    txid?: string;
+}
+export interface BlockInfo {
+    Hash: string;
+    Time: number;
+    Txs: number;
+    Size: number;
+    Height: number;
+}
+export interface Blocks {
+    page?: number;
+    totalPages?: number;
+    itemsOnPage?: number;
+    blocks: BlockInfo[];
+}
+export interface Block {
+    page?: number;
+    totalPages?: number;
+    itemsOnPage?: number;
+    hash: string;
+    previousBlockHash?: string;
+    nextBlockHash?: string;
+    height: number;
+    confirmations: number;
+    size: number;
+    time?: number;
+    version: string;
+    merkleRoot: string;
+    nonce: string;
+    bits: string;
+    difficulty: string;
+    tx?: string[];
+    txCount: number;
+    txs?: Tx[];
+    addressAliases?: { [key: string]: AddressAlias };
+}
+export interface BlockRaw {
+    hex: string;
+}
+export interface BackendInfo {
+    error?: string;
+    chain?: string;
+    blocks?: number;
+    headers?: number;
+    bestBlockHash?: string;
+    difficulty?: string;
+    sizeOnDisk?: number;
+    version?: string;
+    subversion?: string;
+    protocolVersion?: string;
+    timeOffset?: number;
+    warnings?: string;
+    consensus_version?: string;
+    consensus?: any;
+}
+export interface InternalStateColumn {
+    name: string;
+    version: number;
+    rows: number;
+    keyBytes: number;
+    valueBytes: number;
+    updated: string;
+}
+export interface BlockbookInfo {
+    coin: string;
+    host: string;
+    version: string;
+    gitCommit: string;
+    buildTime: string;
+    syncMode: boolean;
+    initialSync: boolean;
+    inSync: boolean;
+    bestHeight: number;
+    lastBlockTime: string;
+    inSyncMempool: boolean;
+    lastMempoolTime: string;
+    mempoolSize: number;
+    decimals: number;
+    dbSize: number;
+    hasFiatRates?: boolean;
+    hasTokenFiatRates?: boolean;
+    currentFiatRatesTime?: string;
+    historicalFiatRatesTime?: string;
+    historicalTokenFiatRatesTime?: string;
+    dbSizeFromColumns?: number;
+    dbColumns?: InternalStateColumn[];
+    about: string;
+}
+export interface SystemInfo {
+    blockbook?: BlockbookInfo;
+    backend?: BackendInfo;
+}
+export interface FiatTicker {
+    ts?: number;
+    rates: { [key: string]: number };
+    error?: string;
+}
+export interface FiatTickers {
+    tickers: FiatTicker[];
+}
+export interface AvailableVsCurrencies {
+    ts?: number;
+    available_currencies: string[];
+    error?: string;
+}
+export interface WsReq {
+    id: string;
+    method:
+        | 'getAccountInfo'
+        | 'getInfo'
+        | 'getBlockHash'
+        | 'getAccountUtxo'
+        | 'getBalanceHistory'
+        | 'getTransaction'
+        | 'getTransactionSpecific'
+        | 'estimateFee'
+        | 'sendTransaction'
+        | 'subscribeNewBlock'
+        | 'unsubscribeNewBlock'
+        | 'subscribeNewTransaction'
+        | 'unsubscribeNewTransaction'
+        | 'subscribeAddresses'
+        | 'unsubscribeAddresses'
+        | 'subscribeFiatRates'
+        | 'unsubscribeFiatRates'
+        | 'ping'
+        | 'getCurrentFiatRates'
+        | 'getFiatRatesForTimestamps'
+        | 'getFiatRatesTickersList';
+    params: any;
+}
+export interface WsRes {
+    id: string;
+    data: any;
+}
+export interface WsAccountInfoReq {
+    descriptor: string;
+    details?: 'basic' | 'tokens' | 'tokenBalances' | 'txids' | 'txslight' | 'txs';
+    tokens?: 'derived' | 'used' | 'nonzero';
+    pageSize?: number;
+    page?: number;
+    from?: number;
+    to?: number;
+    contractFilter?: string;
+    secondaryCurrency?: string;
+    gap?: number;
+}
+export interface WsBackendInfo {
+    version?: string;
+    subversion?: string;
+    consensus_version?: string;
+    consensus?: any;
+}
+export interface WsInfoRes {
+    name: string;
+    shortcut: string;
+    decimals: number;
+    version: string;
+    bestHeight: number;
+    bestHash: string;
+    block0Hash: string;
+    testnet: boolean;
+    backend: WsBackendInfo;
+}
+export interface WsBlockHashReq {
+    height: number;
+}
+export interface WsBlockHashRes {
+    hash: string;
+}
+export interface WsBlockReq {
+    id: string;
+    pageSize?: number;
+    page?: number;
+}
+export interface WsAccountUtxoReq {
+    descriptor: string;
+}
+export interface WsBalanceHistoryReq {
+    descriptor: string;
+    from?: number;
+    to?: number;
+    currencies?: string[];
+    gap?: number;
+    groupBy?: number;
+}
+export interface WsTransactionReq {
+    txid: string;
+}
+export interface WsTransactionSpecificReq {
+    txid: string;
+}
+export interface WsEstimateFeeReq {
+    blocks?: number[];
+    specific?: {
+        conservative?: boolean;
+        txsize?: number;
+        from?: string;
+        to?: string;
+        data?: string;
+        value?: string;
+    };
+}
+export interface WsEstimateFeeRes {
+    feePerTx?: string;
+    feePerUnit?: string;
+    feeLimit?: string;
+}
+export interface WsSendTransactionReq {
+    hex: string;
+}
+export interface WsSubscribeAddressesReq {
+    addresses: string[];
+}
+export interface WsSubscribeFiatRatesReq {
+    currency?: string;
+    tokens?: string[];
+}
+export interface WsCurrentFiatRatesReq {
+    currencies?: string[];
+    token?: string;
+}
+export interface WsFiatRatesForTimestampsReq {
+    timestamps: number[];
+    currencies?: string[];
+    token?: string;
+}
+export interface WsFiatRatesTickersListReq {
+    timestamp?: number;
+    token?: string;
+}
diff --git a/build/tools/typescriptify/typescriptify.go b/build/tools/typescriptify/typescriptify.go
new file mode 100644
index 00000000..0de13003
--- /dev/null
+++ b/build/tools/typescriptify/typescriptify.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"fmt"
+	"math/big"
+	"time"
+
+	"github.com/tkrajina/typescriptify-golang-structs/typescriptify"
+	"github.com/trezor/blockbook/api"
+	"github.com/trezor/blockbook/server"
+)
+
+func main() {
+	t := typescriptify.New()
+	t.CreateInterface = true
+	t.Indent = "  "
+	t.BackupDir = ""
+
+	t.ManageType(api.Amount{}, typescriptify.TypeOptions{TSType: "string"})
+	t.ManageType([]api.Amount{}, typescriptify.TypeOptions{TSType: "string[]"})
+	t.ManageType(big.Int{}, typescriptify.TypeOptions{TSType: "string"})
+	t.ManageType(time.Time{}, typescriptify.TypeOptions{TSType: "string", TSDoc: "Time in ISO 8601 YYYY-MM-DDTHH:mm:ss.sssZd"})
+
+	// API - REST and Websocket
+	t.Add(api.APIError{})
+	t.Add(api.Tx{})
+	t.Add(api.FeeStats{})
+	t.Add(api.Address{})
+	t.Add(api.Utxo{})
+	t.Add(api.BalanceHistory{})
+	t.Add(api.Blocks{})
+	t.Add(api.Block{})
+	t.Add(api.BlockRaw{})
+	t.Add(api.SystemInfo{})
+	t.Add(api.FiatTicker{})
+	t.Add(api.FiatTickers{})
+	t.Add(api.AvailableVsCurrencies{})
+
+	// Websocket specific
+	t.Add(server.WsReq{})
+	t.Add(server.WsRes{})
+	t.Add(server.WsAccountInfoReq{})
+	t.Add(server.WsInfoRes{})
+	t.Add(server.WsBlockHashReq{})
+	t.Add(server.WsBlockHashRes{})
+	t.Add(server.WsBlockReq{})
+	t.Add(server.WsAccountUtxoReq{})
+	t.Add(server.WsBalanceHistoryReq{})
+	t.Add(server.WsTransactionReq{})
+	t.Add(server.WsTransactionSpecificReq{})
+	t.Add(server.WsEstimateFeeReq{})
+	t.Add(server.WsEstimateFeeRes{})
+	t.Add(server.WsSendTransactionReq{})
+	t.Add(server.WsSubscribeAddressesReq{})
+	t.Add(server.WsSubscribeFiatRatesReq{})
+	t.Add(server.WsCurrentFiatRatesReq{})
+	t.Add(server.WsFiatRatesForTimestampsReq{})
+	t.Add(server.WsFiatRatesTickersListReq{})
+
+	err := t.ConvertToFile("blockbook-api.d.ts")
+	if err != nil {
+		panic(err.Error())
+	}
+	fmt.Println("OK")
+}
diff --git a/go.mod b/go.mod
index a47d5548..9d0da168 100644
--- a/go.mod
+++ b/go.mod
@@ -75,6 +75,8 @@ require (
 	github.com/stretchr/testify v1.8.1 // indirect
 	github.com/tklauser/go-sysconf v0.3.5 // indirect
 	github.com/tklauser/numcpus v0.2.2 // indirect
+	github.com/tkrajina/go-reflector v0.5.5 // indirect
+	github.com/tkrajina/typescriptify-golang-structs v0.1.10 // indirect
 	github.com/yusufpapurcu/wmi v1.2.2 // indirect
 	golang.org/x/exp v0.0.0-20220426173459-3bcf042a4bf5 // indirect
 	golang.org/x/sys v0.5.0 // indirect
diff --git a/go.sum b/go.sum
index d7bff8ff..bf574ce6 100644
--- a/go.sum
+++ b/go.sum
@@ -367,6 +367,10 @@ github.com/tklauser/go-sysconf v0.3.5 h1:uu3Xl4nkLzQfXNsWn15rPc/HQCJKObbt1dKJeWp
 github.com/tklauser/go-sysconf v0.3.5/go.mod h1:MkWzOF4RMCshBAMXuhXJs64Rte09mITnppBXY/rYEFI=
 github.com/tklauser/numcpus v0.2.2 h1:oyhllyrScuYI6g+h/zUvNXNp1wy7x8qQy3t/piefldA=
 github.com/tklauser/numcpus v0.2.2/go.mod h1:x3qojaO3uyYt0i56EW/VUYs7uBvdl2fkfZFu0T9wgjM=
+github.com/tkrajina/go-reflector v0.5.5 h1:gwoQFNye30Kk7NrExj8zm3zFtrGPqOkzFMLuQZg1DtQ=
+github.com/tkrajina/go-reflector v0.5.5/go.mod h1:ECbqLgccecY5kPmPmXg1MrHW585yMcDkVl6IvJe64T4=
+github.com/tkrajina/typescriptify-golang-structs v0.1.10 h1:W/Ta9Kqo2lV+7bVXuQoUhZ0bDlnjwtPpKsy3A9M1nYg=
+github.com/tkrajina/typescriptify-golang-structs v0.1.10/go.mod h1:sjU00nti/PMEOZb07KljFlR+lJ+RotsC0GBQMv9EKls=
 github.com/tyler-smith/go-bip39 v1.0.2 h1:+t3w+KwLXO6154GNJY+qUtIxLTmFjfUmpguQT1OlOT8=
 github.com/urfave/cli/v2 v2.10.2 h1:x3p8awjp/2arX+Nl/G2040AZpOCHS/eMJJ1/a+mye4Y=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
diff --git a/server/public_test.go b/server/public_test.go
index 65871377..eba62945 100644
--- a/server/public_test.go
+++ b/server/public_test.go
@@ -1262,7 +1262,7 @@ func websocketTestsBitcoinType(t *testing.T, ts *httptest.Server) {
 					"timestamps": []string{"yesterday"},
 				},
 			},
-			want: `{"id":"23","data":{"error":{"message":"json: cannot unmarshal string into Go struct field .timestamps of type int64"}}}`,
+			want: `{"id":"23","data":{"error":{"message":"json: cannot unmarshal string into Go struct field WsFiatRatesForTimestampsReq.timestamps of type int64"}}}`,
 		},
 		{
 			name: "websocket getFiatRatesForTimestamps empty currency",
diff --git a/server/websocket.go b/server/websocket.go
index 4ff5fd53..38f34297 100644
--- a/server/websocket.go
+++ b/server/websocket.go
@@ -34,21 +34,10 @@ var (
 	connectionCounter uint64
 )
 
-type websocketReq struct {
-	ID     string          `json:"id"`
-	Method string          `json:"method"`
-	Params json.RawMessage `json:"params"`
-}
-
-type websocketRes struct {
-	ID   string      `json:"id"`
-	Data interface{} `json:"data"`
-}
-
 type websocketChannel struct {
 	id            uint64
 	conn          *websocket.Conn
-	out           chan *websocketRes
+	out           chan *WsRes
 	ip            string
 	requestHeader http.Header
 	alive         bool
@@ -56,11 +45,6 @@ type websocketChannel struct {
 	addrDescs     []string // subscribed address descriptors as strings
 }
 
-type fiatRatesSubscription struct {
-	Currency string   `json:"currency"`
-	Tokens   []string `json:"tokens"`
-}
-
 // WebsocketServer is a handle to websocket server
 type WebsocketServer struct {
 	upgrader                        *websocket.Upgrader
@@ -147,7 +131,7 @@ func (s *WebsocketServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	c := &websocketChannel{
 		id:            atomic.AddUint64(&connectionCounter, 1),
 		conn:          conn,
-		out:           make(chan *websocketRes, outChannelSize),
+		out:           make(chan *WsRes, outChannelSize),
 		ip:            getIP(r),
 		requestHeader: r.Header,
 		alive:         true,
@@ -184,7 +168,7 @@ func (c *websocketChannel) CloseOut() bool {
 	return false
 }
 
-func (c *websocketChannel) DataOut(data *websocketRes) {
+func (c *websocketChannel) DataOut(data *WsRes) {
 	c.aliveLock.Lock()
 	defer c.aliveLock.Unlock()
 	if c.alive {
@@ -215,7 +199,7 @@ func (s *WebsocketServer) inputLoop(c *websocketChannel) {
 		}
 		switch t {
 		case websocket.TextMessage:
-			var req websocketReq
+			var req WsReq
 			err := json.Unmarshal(d, &req)
 			if err != nil {
 				glog.Error("Error parsing message from ", c.id, ", ", string(d), ", ", err)
@@ -229,7 +213,6 @@ func (s *WebsocketServer) inputLoop(c *websocketChannel) {
 			return
 		case websocket.PingMessage:
 			c.conn.WriteControl(websocket.PongMessage, nil, time.Now().Add(defaultTimeout))
-			break
 		case websocket.CloseMessage:
 			s.closeChannel(c)
 			return
@@ -270,36 +253,30 @@ func (s *WebsocketServer) onDisconnect(c *websocketChannel) {
 	s.metrics.WebsocketClients.Dec()
 }
 
-var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *websocketReq) (interface{}, error){
-	"getAccountInfo": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *WsReq) (interface{}, error){
+	"getAccountInfo": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		r, err := unmarshalGetAccountInfoRequest(req.Params)
 		if err == nil {
 			rv, err = s.getAccountInfo(r)
 		}
 		return
 	},
-	"getInfo": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"getInfo": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.getInfo()
 	},
-	"getBlockHash": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Height int `json:"height"`
-		}{}
+	"getBlockHash": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsBlockHashReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getBlockHash(r.Height)
 		}
 		return
 	},
-	"getBlock": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"getBlock": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		if !s.is.ExtendedIndex {
 			return nil, errors.New("Not supported")
 		}
-		r := struct {
-			Id       string `json:"id"`
-			PageSize int    `json:"pageSize"`
-			Page     int    `json:"page"`
-		}{}
+		r := WsBlockReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if r.PageSize == 0 {
 			r.PageSize = 1000000
@@ -309,25 +286,16 @@ var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *webs
 		}
 		return
 	},
-	"getAccountUtxo": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Descriptor string `json:"descriptor"`
-		}{}
+	"getAccountUtxo": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsAccountUtxoReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getAccountUtxo(r.Descriptor)
 		}
 		return
 	},
-	"getBalanceHistory": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Descriptor string   `json:"descriptor"`
-			From       int64    `json:"from"`
-			To         int64    `json:"to"`
-			Currencies []string `json:"currencies"`
-			Gap        int      `json:"gap"`
-			GroupBy    uint32   `json:"groupBy"`
-		}{}
+	"getBalanceHistory": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsBalanceHistoryReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			if r.From <= 0 {
@@ -346,63 +314,57 @@ var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *webs
 		}
 		return
 	},
-	"getTransaction": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Txid string `json:"txid"`
-		}{}
+	"getTransaction": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsTransactionReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getTransaction(r.Txid)
 		}
 		return
 	},
-	"getTransactionSpecific": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Txid string `json:"txid"`
-		}{}
+	"getTransactionSpecific": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsTransactionSpecificReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getTransactionSpecific(r.Txid)
 		}
 		return
 	},
-	"estimateFee": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"estimateFee": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.estimateFee(c, req.Params)
 	},
-	"sendTransaction": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Hex string `json:"hex"`
-		}{}
+	"sendTransaction": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsSendTransactionReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.sendTransaction(r.Hex)
 		}
 		return
 	},
-	"subscribeNewBlock": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"subscribeNewBlock": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.subscribeNewBlock(c, req)
 	},
-	"unsubscribeNewBlock": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"unsubscribeNewBlock": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.unsubscribeNewBlock(c)
 	},
-	"subscribeNewTransaction": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"subscribeNewTransaction": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.subscribeNewTransaction(c, req)
 	},
-	"unsubscribeNewTransaction": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"unsubscribeNewTransaction": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.unsubscribeNewTransaction(c)
 	},
-	"subscribeAddresses": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"subscribeAddresses": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		ad, err := s.unmarshalAddresses(req.Params)
 		if err == nil {
 			rv, err = s.subscribeAddresses(c, ad, req)
 		}
 		return
 	},
-	"unsubscribeAddresses": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"unsubscribeAddresses": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.unsubscribeAddresses(c)
 	},
-	"subscribeFiatRates": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		var r fiatRatesSubscription
+	"subscribeFiatRates": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		var r WsSubscribeFiatRatesReq
 		err = json.Unmarshal(req.Params, &r)
 		if err != nil {
 			return nil, err
@@ -413,41 +375,31 @@ var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *webs
 		}
 		return s.subscribeFiatRates(c, &r, req)
 	},
-	"unsubscribeFiatRates": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"unsubscribeFiatRates": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		return s.unsubscribeFiatRates(c)
 	},
-	"ping": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
+	"ping": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
 		r := struct{}{}
 		return r, nil
 	},
-	"getCurrentFiatRates": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Currencies []string `json:"currencies"`
-			Token      string   `json:"token"`
-		}{}
+	"getCurrentFiatRates": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsCurrentFiatRatesReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getCurrentFiatRates(r.Currencies, r.Token)
 		}
 		return
 	},
-	"getFiatRatesForTimestamps": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Timestamps []int64  `json:"timestamps"`
-			Currencies []string `json:"currencies"`
-			Token      string   `json:"token"`
-		}{}
+	"getFiatRatesForTimestamps": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsFiatRatesForTimestampsReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getFiatRatesForTimestamps(r.Timestamps, r.Currencies, r.Token)
 		}
 		return
 	},
-	"getFiatRatesTickersList": func(s *WebsocketServer, c *websocketChannel, req *websocketReq) (rv interface{}, err error) {
-		r := struct {
-			Timestamp int64  `json:"timestamp"`
-			Token     string `json:"token"`
-		}{}
+	"getFiatRatesTickersList": func(s *WebsocketServer, c *websocketChannel, req *WsReq) (rv interface{}, err error) {
+		r := WsFiatRatesTickersListReq{}
 		err = json.Unmarshal(req.Params, &r)
 		if err == nil {
 			rv, err = s.getAvailableVsCurrencies(r.Timestamp, r.Token)
@@ -456,7 +408,7 @@ var requestHandlers = map[string]func(*WebsocketServer, *websocketChannel, *webs
 	},
 }
 
-func (s *WebsocketServer) onRequest(c *websocketChannel, req *websocketReq) {
+func (s *WebsocketServer) onRequest(c *websocketChannel, req *WsReq) {
 	var err error
 	var data interface{}
 	defer func() {
@@ -469,7 +421,7 @@ func (s *WebsocketServer) onRequest(c *websocketChannel, req *websocketReq) {
 		}
 		// nil data means no response
 		if data != nil {
-			c.DataOut(&websocketRes{
+			c.DataOut(&WsRes{
 				ID:   req.ID,
 				Data: data,
 			})
@@ -499,21 +451,8 @@ func (s *WebsocketServer) onRequest(c *websocketChannel, req *websocketReq) {
 	}
 }
 
-type accountInfoReq struct {
-	Descriptor        string `json:"descriptor"`
-	Details           string `json:"details"`
-	Tokens            string `json:"tokens"`
-	PageSize          int    `json:"pageSize"`
-	Page              int    `json:"page"`
-	FromHeight        int    `json:"from"`
-	ToHeight          int    `json:"to"`
-	ContractFilter    string `json:"contractFilter"`
-	SecondaryCurrency string `json:"secondaryCurrency"`
-	Gap               int    `json:"gap"`
-}
-
-func unmarshalGetAccountInfoRequest(params []byte) (*accountInfoReq, error) {
-	var r accountInfoReq
+func unmarshalGetAccountInfoRequest(params []byte) (*WsAccountInfoReq, error) {
+	var r WsAccountInfoReq
 	err := json.Unmarshal(params, &r)
 	if err != nil {
 		return nil, err
@@ -521,7 +460,7 @@ func unmarshalGetAccountInfoRequest(params []byte) (*accountInfoReq, error) {
 	return &r, nil
 }
 
-func (s *WebsocketServer) getAccountInfo(req *accountInfoReq) (res *api.Address, err error) {
+func (s *WebsocketServer) getAccountInfo(req *WsAccountInfoReq) (res *api.Address, err error) {
 	var opt api.AccountDetails
 	switch req.Details {
 	case "tokens":
@@ -563,7 +502,7 @@ func (s *WebsocketServer) getAccountInfo(req *accountInfoReq) (res *api.Address,
 	return a, nil
 }
 
-func (s *WebsocketServer) getAccountUtxo(descriptor string) (interface{}, error) {
+func (s *WebsocketServer) getAccountUtxo(descriptor string) (api.Utxos, error) {
 	utxo, err := s.api.GetXpubUtxo(descriptor, false, 0)
 	if err != nil {
 		return s.api.GetAddressUtxo(descriptor, false)
@@ -571,7 +510,7 @@ func (s *WebsocketServer) getAccountUtxo(descriptor string) (interface{}, error)
 	return utxo, nil
 }
 
-func (s *WebsocketServer) getTransaction(txid string) (interface{}, error) {
+func (s *WebsocketServer) getTransaction(txid string) (*api.Tx, error) {
 	return s.api.GetTransaction(txid, false, false)
 }
 
@@ -579,31 +518,14 @@ func (s *WebsocketServer) getTransactionSpecific(txid string) (interface{}, erro
 	return s.chain.GetTransactionSpecific(&bchain.Tx{Txid: txid})
 }
 
-func (s *WebsocketServer) getInfo() (interface{}, error) {
+func (s *WebsocketServer) getInfo() (*WsInfoRes, error) {
 	vi := common.GetVersionInfo()
 	bi := s.is.GetBackendInfo()
 	height, hash, err := s.db.GetBestBlock()
 	if err != nil {
 		return nil, err
 	}
-	type backendInfo struct {
-		Version          string      `json:"version,omitempty"`
-		Subversion       string      `json:"subversion,omitempty"`
-		ConsensusVersion string      `json:"consensus_version,omitempty"`
-		Consensus        interface{} `json:"consensus,omitempty"`
-	}
-	type info struct {
-		Name       string      `json:"name"`
-		Shortcut   string      `json:"shortcut"`
-		Decimals   int         `json:"decimals"`
-		Version    string      `json:"version"`
-		BestHeight int         `json:"bestHeight"`
-		BestHash   string      `json:"bestHash"`
-		Block0Hash string      `json:"block0Hash"`
-		Testnet    bool        `json:"testnet"`
-		Backend    backendInfo `json:"backend"`
-	}
-	return &info{
+	return &WsInfoRes{
 		Name:       s.is.Coin,
 		Shortcut:   s.is.CoinShortcut,
 		Decimals:   s.chainParser.AmountDecimals(),
@@ -612,7 +534,7 @@ func (s *WebsocketServer) getInfo() (interface{}, error) {
 		Version:    vi.Version,
 		Block0Hash: s.block0hash,
 		Testnet:    s.chain.IsTestnet(),
-		Backend: backendInfo{
+		Backend: WsBackendInfo{
 			Version:          bi.Version,
 			Subversion:       bi.Subversion,
 			ConsensusVersion: bi.ConsensusVersion,
@@ -621,15 +543,12 @@ func (s *WebsocketServer) getInfo() (interface{}, error) {
 	}, nil
 }
 
-func (s *WebsocketServer) getBlockHash(height int) (interface{}, error) {
+func (s *WebsocketServer) getBlockHash(height int) (*WsBlockHashRes, error) {
 	h, err := s.db.GetBlockHash(uint32(height))
 	if err != nil {
 		return nil, err
 	}
-	type hash struct {
-		Hash string `json:"hash"`
-	}
-	return &hash{
+	return &WsBlockHashRes{
 		Hash: h,
 	}, nil
 }
@@ -643,21 +562,12 @@ func (s *WebsocketServer) getBlock(id string, page, pageSize int) (interface{},
 }
 
 func (s *WebsocketServer) estimateFee(c *websocketChannel, params []byte) (interface{}, error) {
-	type estimateFeeReq struct {
-		Blocks   []int                  `json:"blocks"`
-		Specific map[string]interface{} `json:"specific"`
-	}
-	type estimateFeeRes struct {
-		FeePerTx   string `json:"feePerTx,omitempty"`
-		FeePerUnit string `json:"feePerUnit,omitempty"`
-		FeeLimit   string `json:"feeLimit,omitempty"`
-	}
-	var r estimateFeeReq
+	var r WsEstimateFeeReq
 	err := json.Unmarshal(params, &r)
 	if err != nil {
 		return nil, err
 	}
-	res := make([]estimateFeeRes, len(r.Blocks))
+	res := make([]WsEstimateFeeRes, len(r.Blocks))
 	if s.chainParser.GetChainType() == bchain.ChainEthereumType {
 		gas, err := s.chain.EthereumTypeEstimateGas(r.Specific)
 		if err != nil {
@@ -729,7 +639,7 @@ type subscriptionResponseMessage struct {
 	Message    string `json:"message"`
 }
 
-func (s *WebsocketServer) subscribeNewBlock(c *websocketChannel, req *websocketReq) (res interface{}, err error) {
+func (s *WebsocketServer) subscribeNewBlock(c *websocketChannel, req *WsReq) (res interface{}, err error) {
 	s.newBlockSubscriptionsLock.Lock()
 	defer s.newBlockSubscriptionsLock.Unlock()
 	s.newBlockSubscriptions[c] = req.ID
@@ -745,7 +655,7 @@ func (s *WebsocketServer) unsubscribeNewBlock(c *websocketChannel) (res interfac
 	return &subscriptionResponse{false}, nil
 }
 
-func (s *WebsocketServer) subscribeNewTransaction(c *websocketChannel, req *websocketReq) (res interface{}, err error) {
+func (s *WebsocketServer) subscribeNewTransaction(c *websocketChannel, req *WsReq) (res interface{}, err error) {
 	s.newTransactionSubscriptionsLock.Lock()
 	defer s.newTransactionSubscriptionsLock.Unlock()
 	if !s.newTransactionEnabled {
@@ -768,9 +678,7 @@ func (s *WebsocketServer) unsubscribeNewTransaction(c *websocketChannel) (res in
 }
 
 func (s *WebsocketServer) unmarshalAddresses(params []byte) ([]string, error) {
-	r := struct {
-		Addresses []string `json:"addresses"`
-	}{}
+	r := WsSubscribeAddressesReq{}
 	err := json.Unmarshal(params, &r)
 	if err != nil {
 		return nil, err
@@ -804,7 +712,7 @@ func (s *WebsocketServer) doUnsubscribeAddresses(c *websocketChannel) {
 	c.addrDescs = nil
 }
 
-func (s *WebsocketServer) subscribeAddresses(c *websocketChannel, addrDesc []string, req *websocketReq) (res interface{}, err error) {
+func (s *WebsocketServer) subscribeAddresses(c *websocketChannel, addrDesc []string, req *WsReq) (res interface{}, err error) {
 	s.addressSubscriptionsLock.Lock()
 	defer s.addressSubscriptionsLock.Unlock()
 	// unsubscribe all previous subscriptions
@@ -847,7 +755,7 @@ func (s *WebsocketServer) doUnsubscribeFiatRates(c *websocketChannel) {
 }
 
 // subscribeFiatRates subscribes all FiatRates subscriptions by this channel
-func (s *WebsocketServer) subscribeFiatRates(c *websocketChannel, d *fiatRatesSubscription, req *websocketReq) (res interface{}, err error) {
+func (s *WebsocketServer) subscribeFiatRates(c *websocketChannel, d *WsSubscribeFiatRatesReq, req *WsReq) (res interface{}, err error) {
 	s.fiatRatesSubscriptionsLock.Lock()
 	defer s.fiatRatesSubscriptionsLock.Unlock()
 	// unsubscribe all previous subscriptions
@@ -891,7 +799,7 @@ func (s *WebsocketServer) onNewBlockAsync(hash string, height uint32) {
 		Hash:   hash,
 	}
 	for c, id := range s.newBlockSubscriptions {
-		c.DataOut(&websocketRes{
+		c.DataOut(&WsRes{
 			ID:   id,
 			Data: &data,
 		})
@@ -908,7 +816,7 @@ func (s *WebsocketServer) sendOnNewTx(tx *api.Tx) {
 	s.newTransactionSubscriptionsLock.Lock()
 	defer s.newTransactionSubscriptionsLock.Unlock()
 	for c, id := range s.newTransactionSubscriptions {
-		c.DataOut(&websocketRes{
+		c.DataOut(&WsRes{
 			ID:   id,
 			Data: &tx,
 		})
@@ -936,7 +844,7 @@ func (s *WebsocketServer) sendOnNewTxAddr(stringAddressDescriptor string, tx *ap
 		as, ok := s.addressSubscriptions[stringAddressDescriptor]
 		if ok {
 			for c, id := range as {
-				c.DataOut(&websocketRes{
+				c.DataOut(&WsRes{
 					ID:   id,
 					Data: &data,
 				})
@@ -1038,12 +946,12 @@ func (s *WebsocketServer) broadcastTicker(currency string, rates map[string]floa
 						dataWithTokens.TokenRates[token] = rate
 					}
 				}
-				c.DataOut(&websocketRes{
+				c.DataOut(&WsRes{
 					ID:   id,
 					Data: &dataWithTokens,
 				})
 			} else {
-				c.DataOut(&websocketRes{
+				c.DataOut(&WsRes{
 					ID:   id,
 					Data: &data,
 				})
@@ -1063,17 +971,17 @@ func (s *WebsocketServer) OnNewFiatRatesTicker(ticker *common.CurrencyRatesTicke
 	s.broadcastTicker(allFiatRates, ticker.Rates, nil)
 }
 
-func (s *WebsocketServer) getCurrentFiatRates(currencies []string, token string) (interface{}, error) {
+func (s *WebsocketServer) getCurrentFiatRates(currencies []string, token string) (*api.FiatTicker, error) {
 	ret, err := s.api.GetCurrentFiatRates(currencies, strings.ToLower(token))
 	return ret, err
 }
 
-func (s *WebsocketServer) getFiatRatesForTimestamps(timestamps []int64, currencies []string, token string) (interface{}, error) {
+func (s *WebsocketServer) getFiatRatesForTimestamps(timestamps []int64, currencies []string, token string) (*api.FiatTickers, error) {
 	ret, err := s.api.GetFiatRatesForTimestamps(timestamps, currencies, strings.ToLower(token))
 	return ret, err
 }
 
-func (s *WebsocketServer) getAvailableVsCurrencies(timestamp int64, token string) (interface{}, error) {
+func (s *WebsocketServer) getAvailableVsCurrencies(timestamp int64, token string) (*api.AvailableVsCurrencies, error) {
 	ret, err := s.api.GetAvailableVsCurrencies(timestamp, strings.ToLower(token))
 	return ret, err
 }
diff --git a/server/ws_types.go b/server/ws_types.go
new file mode 100644
index 00000000..edcaabe8
--- /dev/null
+++ b/server/ws_types.go
@@ -0,0 +1,120 @@
+package server
+
+import "encoding/json"
+
+type WsReq struct {
+	ID     string          `json:"id"`
+	Method string          `json:"method" ts_type:"'getAccountInfo' | 'getInfo' | 'getBlockHash' | 'getAccountUtxo' | 'getBalanceHistory' | 'getTransaction' | 'getTransactionSpecific' | 'estimateFee' | 'sendTransaction' | 'subscribeNewBlock' | 'unsubscribeNewBlock' | 'subscribeNewTransaction' | 'unsubscribeNewTransaction' | 'subscribeAddresses' | 'unsubscribeAddresses' | 'subscribeFiatRates' | 'unsubscribeFiatRates' | 'ping' | 'getCurrentFiatRates' | 'getFiatRatesForTimestamps' | 'getFiatRatesTickersList'"`
+	Params json.RawMessage `json:"params" ts_type:"any"`
+}
+
+type WsRes struct {
+	ID   string      `json:"id"`
+	Data interface{} `json:"data"`
+}
+
+type WsAccountInfoReq struct {
+	Descriptor        string `json:"descriptor"`
+	Details           string `json:"details,omitempty" ts_type:"'basic' | 'tokens' | 'tokenBalances' | 'txids' | 'txslight' | 'txs'"`
+	Tokens            string `json:"tokens,omitempty" ts_type:"'derived' | 'used' | 'nonzero'"`
+	PageSize          int    `json:"pageSize,omitempty"`
+	Page              int    `json:"page,omitempty"`
+	FromHeight        int    `json:"from,omitempty"`
+	ToHeight          int    `json:"to,omitempty"`
+	ContractFilter    string `json:"contractFilter,omitempty"`
+	SecondaryCurrency string `json:"secondaryCurrency,omitempty"`
+	Gap               int    `json:"gap,omitempty"`
+}
+
+type WsBackendInfo struct {
+	Version          string      `json:"version,omitempty"`
+	Subversion       string      `json:"subversion,omitempty"`
+	ConsensusVersion string      `json:"consensus_version,omitempty"`
+	Consensus        interface{} `json:"consensus,omitempty"`
+}
+
+type WsInfoRes struct {
+	Name       string        `json:"name"`
+	Shortcut   string        `json:"shortcut"`
+	Decimals   int           `json:"decimals"`
+	Version    string        `json:"version"`
+	BestHeight int           `json:"bestHeight"`
+	BestHash   string        `json:"bestHash"`
+	Block0Hash string        `json:"block0Hash"`
+	Testnet    bool          `json:"testnet"`
+	Backend    WsBackendInfo `json:"backend"`
+}
+
+type WsBlockHashReq struct {
+	Height int `json:"height"`
+}
+
+type WsBlockHashRes struct {
+	Hash string `json:"hash"`
+}
+
+type WsBlockReq struct {
+	Id       string `json:"id"`
+	PageSize int    `json:"pageSize,omitempty"`
+	Page     int    `json:"page,omitempty"`
+}
+
+type WsAccountUtxoReq struct {
+	Descriptor string `json:"descriptor"`
+}
+
+type WsBalanceHistoryReq struct {
+	Descriptor string   `json:"descriptor"`
+	From       int64    `json:"from,omitempty"`
+	To         int64    `json:"to,omitempty"`
+	Currencies []string `json:"currencies,omitempty"`
+	Gap        int      `json:"gap,omitempty"`
+	GroupBy    uint32   `json:"groupBy,omitempty"`
+}
+
+type WsTransactionReq struct {
+	Txid string `json:"txid"`
+}
+
+type WsTransactionSpecificReq struct {
+	Txid string `json:"txid"`
+}
+
+type WsEstimateFeeReq struct {
+	Blocks   []int                  `json:"blocks,omitempty"`
+	Specific map[string]interface{} `json:"specific,omitempty" ts_type:"{conservative?: boolean;txsize?: number;from?: string;to?: string;data?: string;value?: string;}"`
+}
+
+type WsEstimateFeeRes struct {
+	FeePerTx   string `json:"feePerTx,omitempty"`
+	FeePerUnit string `json:"feePerUnit,omitempty"`
+	FeeLimit   string `json:"feeLimit,omitempty"`
+}
+
+type WsSendTransactionReq struct {
+	Hex string `json:"hex"`
+}
+
+type WsSubscribeAddressesReq struct {
+	Addresses []string `json:"addresses"`
+}
+type WsSubscribeFiatRatesReq struct {
+	Currency string   `json:"currency,omitempty"`
+	Tokens   []string `json:"tokens,omitempty"`
+}
+
+type WsCurrentFiatRatesReq struct {
+	Currencies []string `json:"currencies,omitempty"`
+	Token      string   `json:"token,omitempty"`
+}
+
+type WsFiatRatesForTimestampsReq struct {
+	Timestamps []int64  `json:"timestamps"`
+	Currencies []string `json:"currencies,omitempty"`
+	Token      string   `json:"token,omitempty"`
+}
+
+type WsFiatRatesTickersListReq struct {
+	Timestamp int64  `json:"timestamp,omitempty"`
+	Token     string `json:"token,omitempty"`
+}