{
  "manageEntity": {
    "action": "Save",
    "entityId": "1314114657",
    "entityType": "Track",
    "nonce": "0xbc2a89891b73f014d40d590e107dbae1246970e7f3b4d3863360b6f94696d22f",
    "signature": "0xdd6690d71397c848d058bcb43ba4078af791b00d2ecf1592b725d61a4600b91b6221926cc378309b198f787d38528c902233333fc25f1ac13f95a568510a5fbd1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}