{
        "name": "demo",
        "short_name": "demo",
        "theme_color": "#fff",
        "background_color": "#fafafa",
        "display": "standalone",
        "scope": "/",
        "start_url": "/",
        "icons": [
          {
            "src": "assets/creatives/logo-48x48.png",
            "sizes": "48x48",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-72x72.png",
            "sizes": "72x72",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-96x96.png",
            "sizes": "96x96",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-144x144.png",
            "sizes": "144x144",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-168x168.png",
            "sizes": "168x168",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-192x192.png",
            "sizes": "192x192",
            "type": "image/png"
          },
          {
            "src": "assets/creatives/logo-512x512.png",
            "sizes": "512x512",
            "type": "image/png"
          }
        ]
      }