{
  "manageEntity": {
    "action": "Save",
    "entityId": "2009344572",
    "entityType": "Track",
    "nonce": "0xe9fb522fd3ae6dc808cc43bced7e772ec708c0fdfaa96a225007b27488c23d07",
    "signature": "0x0694073cf7e49d5be98cb2486a6a79cd3b5ece4f942a1c0f3a597b7a6e1621482fdf71922dae68584ca14b1740708202342a4a8ca6bb845c5ab90465230d25231b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}