I see that you can create user_metadata with a POST to /dbconnections/signup. Is it possible to add user_metadata when using the /authorize endpoint? We have data that we send to a backend prior to users authenticating for the first time and need the ability to align that data with an app_id that is unique to each application installation. This works in cases where they downloaded the app and are signing up for the first time. But it appears there is no way to add user_metadata through a login event.
If we could pass a parameter to the rules engine or credentials exchange hook this would work also but it appears there is no way to send custom parameters.