Doh!
o.k. u mean actualy do a GET and not look at the options on the help part of the page ...
so the response body in this case returns
"id": "3217",
"username": "F4-F5-D8-AC-02-30",
"start_time": 1553611525,
"expire_time": 1585147525,
"sponsor_name": "as1558",
"sponsor_profile": "16",
"enabled": true,
"current_state": "active",
"notes": "",
"role_name": "[Guest]",
"role_id": 2,
"mac": "F4-F5-D8-AC-02-30",
"mac_auth": true,
"source": "mac_create",
"source2": "mac_create_2",
"do_expire": "1",
"no_portal": "1",
"create_time": 1553611525,
"no_password": "1",
"remote_addr": "10.241.88.85",
"visitor_name": "as1558-chromecastvideo",
"airgroup_enable": "1",
"airgroup_shared": "1",
"expire_postlogin": "0",
"simultaneous_use": "1",
"airgroup_device_type": "24",
"airgroup_shared_user": "as1558",
"sponsor_profile_name": "UoY Game Console Registration",
"_links": {
"self": {
"href": "https://clearpass1old.york.ac.uk/api/device/3217"
}
}
}