Spotify Apps API - Handling arguments and creating navigational tabs (manifest.json)

spotify-apps-sandbox-creating_tabs.json

{
    ...
    "DefaultTabs": [
        {
            "arguments": "index",
            "title": {
                "en": "Home"
            }
        },
        {
            "arguments": "tabs",
            "title": {
                "en": "How to use tabs"
            }
        }
    ],
    ...
}