{"e":"OPTION_PAIR",//eventType "E":1668573571842,//eventTime "id":652,//option id "cid":2,//underlying asset id "u":"BTCUSDT",//Underlying index of the contract"qa":"USDT",//Quotation asset "s":"BTC-221116-21000-C",//Trading pair name "unit":1,//Conversion ratio, the quantity of the underlying asset represented by a single contract. "mq":"0.01",//Minimum trade volume of the underlying asset "d":"CALL",//Option type"sp":"21000",//Strike price "ed":1668585600000//expiration time }