{
  "manageEntity": {
    "action": "Save",
    "entityId": "2062778188",
    "entityType": "Track",
    "nonce": "0x99121696054a31c167d4520ca2f79191c4c9be721d667c5d57027c880e47a58a",
    "signature": "0x0e42b152a0486fec27e647bd30bb2bf24b2ddc9c8a63f393e5ea8fcdc313a7ec22383488f16252e1093bf5284c33f7315aa86210ad5a04a41b43316f2c3771351b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}