Response message format

format

{
  "id": "{id}",   //call back ID
  "code": 1,      //result 0=success;1=fail;2=listenKey invalid
  "msg": ""
}

Response-success

{
  "id":"123", 
  "code": 0, 
  "msg": "success"
}   

response-token invalid

{
  "id":"123", 
  "code": 401,
  "msg": "token expire"
}