| app_id | Unique ID assigned by Midasbuy to the application |
| server_id | Game server number. For multi-server games, Midasbuy needs this number when interacting with game servers. |
| server_name | Corresponding name of the game server (not needed for single-server games). For multi-server games, MidasBuy will display a list of game servers for users to choose from |
| user_id | Unique identifier for the game player within the game |
| user_name | Username (game nickname). On MidasBuy, after the user enters the user_id, the system returns the username to confirm whether the entered user_id is correct |
| user_region | The region to which the game player belongs, maintained by the game side |
| product_id | Unique identifier for in-game items. After a successful purchase, Midasbuy will notify the game server of this product_id |
| shop_region | The site region of Midasbuy. Each site supports a single local currency and local language |
| payment_region | The user region where Midasbuy transactions occur. MidasBuy uses the shop_region selected by the user as the region where the transaction occurs |
| payment_channel | The payment channel used by Midasbuy transaction users |