Request message format

subscribe:

  {
     "method": "SUBSCRIBE/UNSUBSCRIBE",
     "params": [
         "order",
         "trade",
         "balance",
         "position",
         "notify",
         "entrust",
         "profit",
         "track_entrust",
         "user_profile",
         "plan_reverse_entrust"
      ],
     "id": "{id}"    //user defined
  }

Channel names are plain (no @listenKey suffix). The token is carried at handshake time (see General WSS information); it is not part of the subscribe params.

subscribe

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