{
  "manageEntity": {
    "action": "Save",
    "entityId": "235601013",
    "entityType": "Track",
    "nonce": "0x71ec940ed48f1b1463967ec6ccaeb256fd8654d251428c4e86cdf6d76c4687a2",
    "signature": "0xcdf08abee894ff0713c83e7d0ae5b48d27c0526439369ed82512e016f9b50aab2702eb42731840b69a60b87447acc6c23fe9d8f44fd67a70d6240eea2d5093b61b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}