Examine source code of Coinbase

{
  "manifest_version": 3,
  "name": "Coinbase",
  "version": "1.9.2",
  "description": "Coinbase Wallet extension is the safest and easiest way to use crypto apps in your browser.",
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://pro-openapi.debank.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "kawaii-timer@example.com"
    }
  }
}