{
  "manageEntity": {
    "action": "Save",
    "entityId": "595514671",
    "entityType": "Track",
    "nonce": "0x00ea63fdd6efd19b6070163009d5e6fa4f8a6c19139667eb2d7f8480cba46373",
    "signature": "0xe123324c179e65fd45c5323162754e344887f4df66d74fc9babf6c5e37bc57620b78bc0a804839f173b3815667d8299c08349cdec96d5669baa58998bae68ef11b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}