{
  "manageEntity": {
    "action": "Save",
    "entityId": "930576382",
    "entityType": "Track",
    "nonce": "0x7bc1c0f7656b30b25f4ea2c24a029633584ff684b31c342c4282670185a4a46d",
    "signature": "0x8ce4fc2b748365a4d1bac8627a233efc350d7731c7aeb2f5ddcb54c789064eff3c42a92000dfe812502ca59742299e173c3ad14f78116efc96a73db9f8185a9d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}