Using REST API 2.0 how to list users with user access to a repository

[Thom]

For audit purpose I need to list users with user access and group access. Is there a way to differentiate users who gained access through group and directly as users. Just like how it is listed in the admin access page. 

This URI list all users of the repo, but I cannot differentiate between group access and user access.

https://api.bitbucket.org/2.0/workspaces/{workspace}/permissions/repositories/{repo}?pagelen=100

Any help greatly appreciated.