Downgrade miro license from Full to Free-Restricted using API

I am working on Miro License automation where I need to get a list of inactive user's accounts and downgrade their licenses from Full to Free-Restricted. This automation needs to be done using GCP Cloud functions; however, I am not getting any API that can be used to downgrade the licenses. Please let me know how to proceed on this, I’ve gone through some threads that mentions downgrading licenses is not supported as of now. Is it available now or is there any roadmap related to this?