{"e":"trade",// event type "E":1591677941092,// event time "s":"BTC-200630-9000-P",// Option trading symbol "t":1,// trade ID "p":"1000",// price "q":"-2",// quantity "b":4611781675939004417,// buy order ID "a":4611781675939004418,// sell order ID "T":1591677567872,// trade completed time "S":"-1"// direction }