{
  "manageEntity": {
    "action": "Save",
    "entityId": "931612011",
    "entityType": "Track",
    "nonce": "0xffce3f1392ca7c15e9b249ef4f8ea93d17092176b96260c36c66afc0755f96bd",
    "signature": "0x1c13182055a18a59604b971efbe1d9ee8f8451d1ab98915650618a843617c4f57827cb9635ce7079cb59e493f823307d28642a91f65d4f3735338b0c60dc51461c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}