Basic parameters

Basic parameters for subscription requests, with the same parameters for each subscription event.

Request param：

name	type	required	detail
method	String	√	SUBSCRIBE/UNSUBSCRIBE
event	String	√
apiKey	String	√
timestamp	Long	√
signature	String	√
signType	Integer	√	secp256k1

Response param：

Basic parameters for subscription request responses.

name	type	required	detail
success	Boolean	√	true,false
msg	String	√	response message
method	String	√	SUBSCRIBE/UNSUBSCRIBE
event	String	√