Examine source code of SubDeck

{
  "manifest_version": 3,
  "name": "SubDeck",
  "version": "1.0.1",
  "description": "SubDeck - Smart subscription manager that auto-detects and helps you manage online subscriptions",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "history",
    "tabs",
    "storage",
    "alarms",
    "notifications",
    "downloads"
  ],
  "background": {
    "scripts": [
      "background/index.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png"
    },
    "default_title": "SubDeck"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@subdeck.cc",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}