{
  "manageEntity": {
    "action": "Save",
    "entityId": "188843242",
    "entityType": "Track",
    "nonce": "0xd3d049195a5a43ae8ff61ff44ae497068b54a62f70ba2ad7018eafb8a012362a",
    "signature": "0xe2af03412b3372edf810b0a9312a57da232cce9f3f2b6dfc7430dbcfcbbd517570f049873c791fadbe0282583d96703d650a55648e33894f0d0d99386b87048d1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}