Enhancement: add more usable data to the response of user following endpoint

[takanome-dev]

Type of feature

🍕 Feature

Current behavior

Right now, the endpoint only returns the user id. This doesn't make it easy to create the following page without making an extra api call to get each user's data.

Suggested solution

Additional user's data such as the username and `` can be very useful to generate a link to the user's profile and their profile picture

Additional context

No response

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