How to retrieve the groups a user is part of

Given an Auth-Token and a User-Id I need to retrieve the groups another user is part of.
So far I was using the users.info endpoint specifying on the fields query parameter to include the groups.

As an example, the following call returns information about a user identified by USER_ID together with the rooms that the user is part of:

/api/v1/users.info?userId=USER_ID&fields={"rooms": 1}

The fields query parameter has been disabled on Rocket.Chat 7.0.0 and therefore I can no longer use it.

Is there an alternative way to retrieve the groups a user is part of?

Why are you asking two separate questions about essentially the same thing?

Makes it hard to track and confusing.

I don’t know the answer as the docs 404.

Have queried the docs team.