Examine source code of Track FF Extension

{
  "manifest_version": 2,
  "name": "Track FF Extension",
  "version": "1.0",
  "description": "This extension to track usage",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "icon": {
    "48": "/icon.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "/icon.png"
    },
    "default_title": "Track FF Extension",
    "default_popup": "/popup.html"
  },
  "permissions": [
    "*://dpacademy.databoxtech.io/tracker/api/*",
    "storage",
    "webRequest"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3e91719-112c-4deb-858c-819ee1fdd53f}"
    }
  }
}