Support master account operations for FX module

• Effective Date: 2026-09-02 (UTC+8)
• Scope: FX / BaaS

[API] Create FX quote

[API] Create FX trade order

[API] Get FX trade order detail

This update optimizes the entity authentication logic for core endpoints within the Foreign Exchange (FX) module. Effective immediately, the dgp-entity-id header parameter in the FX quote, trade order, and order detail query endpoints has been changed from required to optional.

• Full Support for Master Account Operations: The dgp-entity-id field is primarily utilized to specify a target sub-entity for the operation. Following this adjustment, if this header is omitted during the API call, the system will default to recognizing and operating under the Master Account. This closes the loop for direct FX trading capabilities at the master account level.
• Seamless Backward Compatibility: This adjustment is a non-breaking enhancement. If your existing business logic involves initiating FX transactions for a sub-entity, please continue to pass the corresponding sub-entity ID in the request header. Existing workflows remain completely unaffected.

Thank you for choosing DogPay! If you encounter any issues or need assistance during integration, please feel free to reach out to the technical support team.