{
  "manageEntity": {
    "action": "Save",
    "entityId": "362802686",
    "entityType": "Track",
    "nonce": "0x38412144e586ecd6ca616fbec7b887eed3a7aef573a34f0b929b8b84fc956762",
    "signature": "0x60f52bb809c386307ae1f964ee29f7b07225f72b79b62d269229b3943d7d06285f115c024352f403a2d0cf9067bb3b4bca64ecd1e748a19e97e0ed5ef68af9951b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}