{
  "manageEntity": {
    "action": "Save",
    "entityId": "1654763336",
    "entityType": "Track",
    "nonce": "0x09cf6cc7efb0f6553c9ef2bf44e983bef050f2bd41ca55211b6b03cf9d0d11fa",
    "signature": "0xbeb4c44a29d42a7fc4d26865064f94a519aed011defd08d20c32a797b551fe472fad31d72b0d7fdfb9205044afaf9a896c2c26238d0e9884e513007d59818eca1c",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}