{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088202596",
    "entityType": "Track",
    "nonce": "1792073531895880611",
    "signature": "0xc9178d350442e51b3e496c7522c833fd5f75c8aac4c46ed6f523d7e7b7ba309268e90b0330c00794cf595f958b541cbbeb4fa37e9ca2dcdd07bc81c533491b431b",
    "signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
    "userId": "329513359"
  }
}