How to programatically fetch the unique ID of user who installed/paid the app

Hello,

Which API can be used to programatically fetch the ID of user who installed/paid the app?

This is useful if an app has to create a path hierarchy for different users who have installed/paid the app, for instance, /AppName/<uniqueUserID>/user_files, how to get the uniqueUserID, and also, to get the information about which user these files belong to based on this uniqueUserID.

App is using Swift, SwiftUI.

Thanks.

How to programatically fetch the unique ID of user who installed/paid the app
 
 
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