{
  "manageEntity": {
    "action": "Save",
    "entityId": "1463939008",
    "entityType": "Track",
    "nonce": "0x3700e47b2b6b6f26bb8a4693408fa48ee4bf7d31f2fbd094b6336320a43890eb",
    "signature": "0x3bdd21f91c1c1587aefe7a06f1335d990ab94258e72302ad13efb4643946cd627132b8566d1a8cbf9bca9288f27a955730f08fabf6a105a3e8053526515b4bef1c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}