{
  "name": "Rakuten GURUNAVI",
  "short_name": "Rakuten GURUNAVI",
  "start_url": "/",
  "background_color": "#ffffff",
  "theme_color": "#ffffff",
  "display": "standalone",
  "icons": [
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      "src": "/static/img/logo-splash.png",
      "sizes": "48x48",
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    },
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      "sizes": "72x72",
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    },
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      "src": "/static/img/logo-splash@2x.png",
      "sizes": "96x96",
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    },
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      "sizes": "192x192",
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}