Expand POJO in URL params to multiple object params

Hi!
I think I might need some help here.

Lets say, I have this API contract GET /api/v1/game with url params - gameId, token, settings[language,currency]
In my case, I need the final URL to be like this: /api/v1/game?gameId=1&token=2&settings[language]=en&settings[currency]=USD

I have proper DTO with required fields including 'Settings' object. So for this scenario the temporary solution was using @Param("settings[language]") and so on, but then I should get rid of Settings field.
Is there a more proper way to expand an POJO field to multiple URL params in the style I mentioned before?

Start by locating Feign's handling of @Param values and DTO fields used for URL parameters. Verify how the Settings object is currently represented, then define whether the requested bracketed language and currency parameters can be generated while retaining the DTO field; done means the API contract produces the four shown query parameters without separate annotations for each nested value.