Kotlin SDK retrieve User Creation Date: HOW?

Hello!

Under App Services → Data Access → App Users we can see all the authenticated users with Created Date, and Last Login Date. It is not available in the Kotlin SDK under user.profile or user.customData, nor is it mentioned anywhere in the documentation. I need to show the user creation data in my Android app, and would rather not redundantly save it to the custom user data collection.

How does Atlas get this user meta data (could it be in the access token)?

Thank you for any help, best regards