{
       "name": "Sigma",
       "short_name": "Sigma",
       "start_url": ".",
       "display": "standalone",
       "background_color": "#0175C2",
       "theme_color": "#0175C2",
       "description": "Sigma",
       "orientation": "portrait-primary",
       "prefer_related_applications": false,
       "icons": [
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                  "src": "\/icons/android-icon-36x36.png",
                  "sizes": "36x36",
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              },
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                  "sizes": "48x48",
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                  "sizes": "72x72",
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   }