{
  "manageEntity": {
    "action": "Save",
    "entityId": "1846110981",
    "entityType": "Track",
    "nonce": "0xedc2db776e303940c86097ba2a1b4ea4043b238b2cbec026bbc0a226b5dec0e0",
    "signature": "0xb2705ac85e13a78cdf1408acf14d466972769855ffa1ecac17965be4604556624b158c6480a1b555834c8d1227fb333e82dd4d5cbfbf53ca02da9e6ebf38cfb61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}