{
  "short_name": "",
  "name": "",
  "icons": [
      {
          "src": "/android-chrome-192x192.png",
          "sizes": "192x192",
          "type": "image/png"
       },
       {
        "src": "/android-chrome-512x512.png",
        "sizes": "512x512",
        "type": "image/png"
        }
  ],
  "start_url": "/?utm_source=homescreen",
  "background_color": "#fafafa",
  "theme_color": "#fafafa"
}