{
  "manageEntity": {
    "action": "Save",
    "entityId": "118629",
    "entityType": "Track",
    "nonce": "0xa1cae555bc1ff1e4a736a87ae8e7308f4257b5a212dcd1ebb3d17430f795968f",
    "signature": "0x28722b10154a2c676e143d66b3fc0bf6a05f23595d8b160fdfb49957875d35653dfbcf02c239af883ffae520aafe2958a20f6570a341a02db2d9e692a531b55d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}