{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759403838",
    "entityType": "Track",
    "nonce": "0xd138961e1eb9ccccb777a4268b1e6e7b2c54d084ac1a1e95ee527f610bec305f",
    "signature": "0x0bb11f569e8aa73470a3ba380b7757dd299ad97f29ba11ea9147d799bc274f7154b54e1e3bd4572c1487f0135788e89e88cc508336ec92271471ff0ee325711e1c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}