/list suffix: identity, owner, and registration state. It carries no provisioning fields and no credentials.{
"device": "1001a",
"device-sip-registration-uri": "sip:1001a@example.com",
"user": "1001",
"domain": "example.com",
"device-sip-registration-user-agent": "Yealink SIP-T54W 96.86.0.100",
"device-sip-registration-state": "registered"
}