{
  "manageEntity": {
    "action": "Save",
    "entityId": "562479939",
    "entityType": "Track",
    "nonce": "0x5ff64483714d8e5edc85c85a1cc1a634adc095110253e81878d9c939c29bd230",
    "signature": "0x293ca1bcd255ab6598a59563a2953c240f3f8b76073f4a0fa46b93875e8fc2a00e5fb3d80680ca8bff916872bf4399444588e846e16ef5153bf541632244df8f1b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}