get Merchant Id
Type: integer($int64)
example: 123456
Unique identifier for the client, used to communicate with our server. Provided at signup to use the API. Varies by environment (sandbox vs. production)
Type: integer($int64)
example: 123456
Unique identifier for the client, used to communicate with our server. Provided at signup to use the API. Varies by environment (sandbox vs. production)