Examine source code of White Screen

{
  "name": "White Screen",
  "description": "Helps you to access White Screen tool",
  "version": "0.0.1",
  "manifest_version": 3,
  "incognito": "spanning",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "www.whitescreen.online@gmail.com",
      "strict_min_version": "42.0"
    }
  },
  "content_scripts": [],
  "icons": {
    "16": "/images/logo_16.png",
    "32": "/images/logo_32.png",
    "48": "/images/logo_48.png",
    "128": "/images/logo_128.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+B",
        "mac": "Command+B"
      }
    }
  },
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgKMj2VIf/ENWFcpi0FHgkEysDDwk4+bc8kQ6N0AScmVhFbTLJMuKDXD32Dhn/HxJFYVR7HLrVgchRF2qvBuMaIREJOt7QhoSWNXD0r7PNSr7YU+gH3eBkik1JiTWwZOx/O5Ny7A9uElziVKfPvmGis2lbzf6a6JxsXE4+pMdIKqQrEnuRwsD2aopcluZa5NJAHFxsy0kNRT100QdfPWO6zVEYSNqqY3S1VwhWNCRR4uGDWEKf+XCdUd2DZvv9UbrpkhFFLrBIaTvw5cJKdjZG1KKr1H5LTnv/21teyQ/6nFL0S0eXqpoCVDxQBMhzM4AxcOwNHkjPnxtA5EHO+nbSwIDAQAB"
}