{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116321",
    "entityType": "Track",
    "nonce": "0x0e2f19e14d8a9e84d7440333dd43bc6cb6d8da0ddbe28b03c1eda4c9d183320d",
    "signature": "0x6bf2365f20d64ba2d0b5d22b59193f89fbd863389eb65d95e7ea0f48d1be6bb12a7ef18ff53f4a5f7ec178fc373d3dae2fd50ef1efd19c780f5be4e9154205cc1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}