Examine source code of NetEase to Notion

{
  "manifest_version": 3,
  "name": "NetEase to Notion",
  "version": "1.0",
  "description": "将你的网易云听歌数据导入 Notion 模板",
  "permissions": [
    "identity",
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "https://api.notion.com/*",
    "https://netease-cloud-music-api-tau-one-92.vercel.app/*",
    "https://v0-new-project-s6hp1wgs2wz.vercel.app/*"
  ],
  "oauth2": {
    "client_id": "208d872b-594c-80ec-a8ef-00372cbeec91",
    "scopes": [
      "https://api.notion.com/v1/"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "netease-to-notion@example.com"
    }
  },
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvBxoAQdpXGGaQVgcnLPTah6mwd1KeNQMZjS7lsJ4JzZCRcgGHEbvj6OhTpYwHzZBKq1yt/hQmZgX2xh0CqkDMbNFsGAJ+n/yTr9JXfTwKJFKmAyZigwQsYyIYYJJCKHN1IG7SYJXHr+LMnRYl+aBKJFhefjYY3+qRqgJ7Gy5UtZ9Jf1gyvYL/8OCIRJGxMwBJWCaVzxJGzHLjZAJJQJY/9a8qRZ3MZj+QJyvPHMQEYkHHWxG/lY9VUmAXELHB4iKvZ6cLpJIXeUs02wGE03/pH0zJ2fAHZC/stEXWKkEHJ1n7WGtJPYM4tXNLZPMSutTLtUNVxAJGVpZ9xA8e4Xh+QIDAQAB"
}