level2的50檔全量數據推送頻道

{
   "type": "message",
   "topic": "/contractMarket/level2Depth50:XBTUSDM",
   "subject": "level2",
   "data": {
       "asks":[
         ["9993",3],
         ["9992",3],
         ["9991",47],
         ["9990",32],
         ["9989",8]
       ],
       "bids":[
         ["9988",56],
         ["9987",15],
         ["9986",100],
         ["9985",10],
         ["9984",10]
       ],
        "ts": 1590634672060667000
    }
}

Topic:/contractMarket/level2Depth50:{symbol}

• 推送頻率: 100ms一次