Request message format

subscribe

{
  "method": "SUBSCRIBE/UNSUBSCRIBE",
  "params": [
    "{order}@{listenKey}",
    "{trade}@{listenKey}",
    "{balance}@{listenKey}",
    "{position}@{listenKey}",
    "{notify}@{listenKey}"
  ],
  "id": "{id}"    //user defined
}

subscribe

{
  "method":"SUBSCRIBE",
  "params":["order@A246C3DF8EE532DC75007BC5D86698541678596355681"],
  "id":"test1"
}