【公共】最新成交频道

{
  "action":"subscribe",
  "args":["futures/trade:BTCUSDT"]
}

{
    "group":"futures/trade:BTCUSDT",
    "data":[{
          "trade_id":1409495322,
          "symbol":"BTCUSDT",
          "deal_price":"117387.58",
          "deal_vol":"1445",
          "m":true,
          "created_at":"2023-02-24T07:54:11.124940968Z"
        }]
}