{
  "manageEntity": {
    "action": "Save",
    "entityId": "1731936345",
    "entityType": "Track",
    "nonce": "0xa7d0438757ed769644442fb224b187f95d5488f4a59585546ed8abdf6e48e689",
    "signature": "0x15e4462f22c8b0409f4c28a23ac9a4e375d2564ff47844eb80970ed56c94835050a571a55f9f3697a7a665ce56525a6f079dc00e16d8fcdede2de5cc56cf67191b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}