{
  "manageEntity": {
    "action": "Save",
    "entityId": "1594814953",
    "entityType": "Track",
    "nonce": "0x82efd2d4de76c611e324d761e73457bf3ac6d7eade5fcfc8cacb91953386415c",
    "signature": "0x279c5768683099c58d3685317a80cbb15f152e8ff41c0da5e5bf822a2a2a60e15350b9dcdbb62518b86cf4338ed756518eae92b1c73be7c71e1a7ba98b36fd3b1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}