币安期货 ACCOUNT_UPDATE 通过 websocket 问题进行流交易？

Question

我在执行以下代码时没有收到 Binance api 的响应，这里有什么我可能遗漏的吗？

import json
import websocket


socket='wss://fstream.binance.com/ws'


def on_open(ws):
    print("opened")
    subscribe_message = {
        "method": "SUBSCRIBE",
        "params":
        [
         "ACCOUNT_UPDATE"
         ],
         "id": 1
         }

    ws.send(json.dumps(subscribe_message))

def on_message(ws, message):
    print("received a message")
    print(json.loads(message))     

def on_close(ws):
    print("closed connection")        

ws = websocket.WebSocketApp(socket, on_open=on_open, on_message=on_message, on_close=on_close)
ws.run_forever()