authenticate android app

[toreller]

I have an Android app that downloads files from Supabase storage. Is there a way to authenticate the app itself (rather than the users) to download files from Supabase? I'm looking to obtain a JWT with an authenticated role, without having to create users in Supabase, or possibly by creating just a single service user that represents the app.

Some content will be freely available to any user who encounters the app, but I still want to ensure that this content can only be accessed through the app itself, not by any arbitrary client (so simply making the content public isn't a suitable option).

Thanks!