{
  "manageEntity": {
    "action": "Save",
    "entityId": "834692663",
    "entityType": "Track",
    "nonce": "0xc300f01b11c051912b7280f68f4ef2269e13ef198b25b1ef7e4b6c9a8a5aa7f0",
    "signature": "0x8b2d10bd88719e4e1617fb94334fb88f2ba56eef44c3cfa8b8ea01cb4c5849b37535c632312d8fc9e98ce3b2c78e1400dada6ec3f216d24d01151f94722409371c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}