Basic request:

GET https://{APIDOMAIN}/api-v1/users

Response if there are no users:

{
    "type": "users",
    "org": "your org name",
    "count": 0,
    "memo": "users having a UUID and attached to this org",
    "users": []
}
Response if there are one or more users (example shows one user returned):

{
    "type": "users",
    "org": "your org name",
    "count": 1,
    "memo": "users having a UUID and attached to this org",
    "users": [
        {
            "type": "user",
            "uuid": "XXXXXXXX-XXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
            "sex": "F",
            "created": "2019-07-05 07:15:31"
        }
    ]
}