{
  "manageEntity": {
    "action": "Save",
    "entityId": "1149115806",
    "entityType": "Track",
    "nonce": "0x6a7f9d60d9976f5a727b7d4611dbb59d7879208892b1026e7850831e3cc6e2b3",
    "signature": "0x4e8f13f0c1a49dbafa6147e9f9a03ba2a94d286f8ab44fba6ffee6c60938076f555a1d3ffef85ddf4e41cd376607c79abaf7160e2d67bd0811c65da002f464731c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}