Allow notification for user registration (creation) in Azure B2C tenant
Applications in a B2C workflow need to be able to know when new users have registered.
In our current flow a user purchases a license to our product. The billing software will call a webhook to our application which triggers a transactional email with a registration link (this is an azure B2C registration link). We need to be able to know once the user has completed registration (e.g. we need to be able to subscribe to a "user created" event that calls our application whenever the user signs up). This is important to send a welcome email and bootstrap the customers environment in our system before they actually log in.
This is basically the same as the current change notifications you can create a subscription for:
The difference being that it would work for B2C users and we can specify a changeType of "created" which is currently not supported for the "user" resource type