Examine source code of Addon Update Notifier

{
  "applications": {
    "gecko": {
      "id": "addon-update-notifier@jackymancs4"
    }
  },
  "background": {
    "scripts": [
      "constants.js",
      "notifications.js",
      "management.js"
    ]
  },
  "default_locale": "en",
  "description": "__MSG_extDescription__",
  "icons": {
    "16": "icons/icon.svg",
    "24": "icons/icon.svg",
    "32": "icons/icon.svg",
    "64": "icons/icon.svg",
    "128": "icons/icon.svg",
    "256": "icons/icon.svg"
  },
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "alarms",
    "management",
    "notifications",
    "storage"
  ],
  "version": "1.1.1resigned1"
}