How to send raw_user_meta_data through API to supabase

Hi there,

I’ve been playing around lately with supabase in combination with Bubble. I try to sign up users and have more information about the current user through raw_user_meta_data. This works if I do it directly in the API-call; however I cannot seem to make it work through the registration page on Bubble. Does anyone know what I do wrong?

Thanks in advance!