{
          "theme_color": "#ffffff",
          "background_color": "#ffffff",
          "display": "standalone",
          "scope": "/",
          "start_url": "flybal/",
          "name": "  fly bal",
          "short_name": "  fly bal",
          "description": "  fly bal", 
          "icons": [
              {
                  "src": "https://s5.menudigital.ir/udata/flybal/689754f824a8b.jpg",
                  "sizes": "192x192",
                  "type": "image/png",
                  "purpose": "any maskable"
              }
          ]
        }