{
  "manageEntity": {
    "action": "Save",
    "entityId": "18120012",
    "entityType": "Track",
    "nonce": "0xdfc61983bb5ab6cadbb9de26f048c140b7465fe14b7e2f6f18c8c789e076ef01",
    "signature": "0xce7790da86ea112bc6f1a32991177b64fe5624c86bbc7dd11694c0d57f32bcd267985db88272ffa282258145c799d55f77a83dc2c950e77b27ae61ddf81b08221c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}