This is probably really obvious, but I can't find it.

I'm currently using the Admin REST API to find users by search.

I see that the Admin REST API has get user representation by username, but I want to also find user info (UserRepresentation) given the id.

If this possible through REST? 

(Use case being it makes more sense to me to store the user id in my database as a reference back to keycloak rather than the username or replicate any of the user info which keycloak has stored).