Examine source code of Business Suite Voice Note

{
  "manifest_version": 3,
  "name": "Business Suite Voice Note",
  "version": "1.1",
  "description": "Add push-to-talk voice notes to Meta Business Suite",
  "browser_specific_settings": {
    "gecko": {
      "id": "business-voice-note@yourdomain.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Messenger Voice Note"
  },
  "content_scripts": [
    {
      "matches": [
        "https://business.facebook.com/*"
      ],
      "js": [
        "libs/lame.min.js",
        "scripts/content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}