產品行情數據

 //產品行情數據
  { 
    "id": 1545910660742,                          
    "type": "subscribe",
    "topic": "/contract/instrument:XBTUSDM",   
    "response": true                              
  }

Topic:/contract/instrument:{symbol}

訂閱此topic，可獲取指定合約產品的行情數據。

標記價格、指數價格

  //標記價格、指數價格
  { 
    "topic": "/contract/instrument:XBTUSDM",
    "subject": "mark.index.price",
    "data": {
        "granularity": 1000,           //粒度
        "indexPrice": 4000.23,            //指數價格
        "markPrice": 4010.52,           //標記價格
        "timestamp": 1551770400000
    }
  }

資金費率

 //資金費率
  { 
    "topic": "/contract/instrument:XBTUSDM",
    "subject": "funding.rate",
    "data": {
        "granularity": 60000,  //粒度(預測資金費率：1分鐘粒度60000; 資金費率: 8小時粒度28800000)
        "fundingRate": -0.002966,     //資金費率
        "timestamp": 1551770400000
    }
  }