{
  "manageEntity": {
    "action": "Save",
    "entityId": "1048930927",
    "entityType": "Track",
    "nonce": "0x4c6a02d45a16d777f769edeadeab4b29d1d294bb5dc995a18ed1d650684b5882",
    "signature": "0x742482c8de7c53d899ee51d1c0eb3da3f1fa2c3134419b50a2cf3bc8643545a65597080d632c7ed22c33647fed9548713d0315bcf433a6d320df9971beb70d3c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}