Transfer	http method
Submit	POST, and the request parameters are placed in the body
Data Format	Submit and return data in JSON format
Character Encoding	UTF-8 character encoding
Security Authentication	Provides a security authentication scheme based on AK/SK. Only after the authentication is passed, each API can be accessed normally.
Access Control	Every API needs to be authorized. Calling an unauthorized API will prompt an error.
Return	See public return codes for details
Call Frequency	5s