My team is using GIP for authentication and authorization of users in our SaaS product.
We need to bulk migrate users and keep their custom claims up to date, all of this is easy with the admin SDKs that Google provides.
However our backend is written in Ruby, for which there is no SDK support. This means that we have to use the REST API directly. However I cannot find any documentation on how to authorize these REST requests using my service account details.
May I please ask for some help on how we should use service account credentials to Authorize a GIP REST API request?