What does it mean the "access" object on UserRepresentation?

1

I’ve tried to figure out myself but I gave up, since every modification done on admin console did not reflect on the value of these properties. What do they mean?

        "access": {
            "manageGroupMembership": true,
            "view": true,
            "mapRoles": true,
            "impersonate": true,
            "manage": true
        }