{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090517318",
    "entityType": "Track",
    "nonce": "0x1b1c593db185a0c046b51c0ebc13a7c17f8f3287eebd35be79865da2d4e97836",
    "signature": "0xc02e647c7e55062f3784967115ea89b06e0238ba49afc6952e4a53a0042e46ce562027c29fa7c7abfe4d3d97d92fec3d4ce41142561f9f43bc94f0031ac340471b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}