Examine source code of Joker Monkey

{
  "name": "Joker Monkey",
  "version": "0.0.1",
  "manifest_version": 3,
  "action": {
    "default_popup": "popup.html",
    "default_icon": "logo.png"
  },
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "128": "logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nkdeshmukh371@gmail.com"
    }
  }
}