...
https://xxxxx.fuseuniversal.com/api/v5.0/manage/users?auth_token=<valid_auth_token>&email=test.user@fuseuniversal.com
...
...
https://xxxxx.fuseuniversal.com/api/v5.0/manage/users?auth_token=<valid_auth_token>&email=test.user@fuseuniversal.com
...