{
  "manageEntity": {
    "action": "Save",
    "entityId": "1941929567",
    "entityType": "Track",
    "nonce": "0xa8ef8b5c4ec5070782abf9765c162e9961cf1880c63d73a450d858c9b933cc5c",
    "signature": "0x0dd811ea28e7843f829f19bf6b1d1fe50e6bc104556587694055d0f76ec344b26a2da975b5896fd8f183265ed149989a0a0daa18f93282c7d8ab0d0143d695631b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}