{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009808",
    "entityType": "Track",
    "nonce": "0x159bc0097f3fdf7f23ea2fbad11d5d3e1d6f3821fe487b249a8280aa940f6630",
    "signature": "0x868efd61d5f790e41e589c5af6d34fa40a2b3738002de215fc8b4bdccf38b6e06494a83ac41363c49b41b41bc62ceda66fc23e0c0592d788d4dcaa9916eea0e81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}