Examine source code of Coinbase Addon extension

{
  "manifest_version": 3,
  "name": "Coinbase Addon extension",
  "version": "1.0",
  "description": "A Tokens Walliet in your Browser",
  "action": {
    "default_popup": "index.html"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "8b2b3c9b6a7310bc@organicapolo.com",
      "strict_min_version": "89.0"
    }
  }
}