{
  "manageEntity": {
    "action": "Save",
    "entityId": "127394241",
    "entityType": "Track",
    "nonce": "0x2f0f1cde68cc33d9bc29b44437a606209a7a7c3dfa0850488e2fd00c62d38d43",
    "signature": "0x83471dbc009e02e8f72f62dba5dbc0ce84f422790008707b2d9f11bb3166917007cd2c1ca5340d5e98fc20b93208c64c23e11451fb8e6d4fa7727dd1221ae0e51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}