1 Get current timestamp: "timestamp": 1725870284179
2 Sign the string format of the timestamp
Before signing: "1725870284179"
sign result: 0xb24d1c6e35ca7532cf5c984397f842684da580e6c3d3fe8212c90fa59dcfaec955700dcaafc45259ca6e181c96c006427fc121af898dbdc10457df65e485a0c61c
3 Assembling parameters, including basic parameters for subscription and custom additional parameters for the interface.
{
"symbol": "USD",
"method": "SUBSCRIBE",
"event": "api_account",
"apiKey": "st_fq6cvRF4fr5tnKiZfrIntRnLfrwxcXjcfr1y8FR7",
"signature": "0xb24d1c6e35ca7532cf5c984397f842684da580e6c3d3fe8212c90fa59dcfaec955700dcaafc45259ca6e181c96c006427fc121af898dbdc10457df65e485a0c61c",
"timestamp": 1725870284179,
"signType": "2"
}