{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102132",
    "entityType": "Track",
    "nonce": "0x279fe1ea15b10633b01e2e939727d9740c54459c461695cca0f3ab397c84fabc",
    "signature": "0xfdb0e90de0d5792a9dbcd3166aa4bd30cf1ecdcd569ec308493b5c7f2cddd57d63c68115877e2a63060e5c8c60dc19bede816925ec5af342f293f9cca380c1711b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}