Message Structure

- Service: REST API

- HTTP Method: POST

- Content Type: application/json

- The Request structure:

#	Component	Param	Description
1	Header	APIKey	Key for authentication request. Provided by GALAXY PAY.
		Signature	Request signature, created with SHA256 & Salt
		Accept	Accept encoding: application/json
		Content-Type	Request content type: application/json
2	Body		JSON content