```json
{
    "navbar": {
        "title": "DataViz Pulse",
        "logo": "activity",
        "links": [
            {
                "name": "Dashboard",
                "href": "/",
                "icon": "home"
            },
            {
                "name": "Analytics",
                "href": "/analytics.html",
                "icon": "bar-chart-2"
            },
            {
                "name": "Reports",
                "href": "/reports.html",
                "icon": "file-text"
            },
            {
                "name": "Settings",
                "href": "/settings.html",
                "icon": "settings"
            }
        ]
    },
    "dashboard": {
        "widgets": [
            {
                "type": "chart",
                "config": {
                    "title": "Revenue Overview",
                    "type": "area",
                    "height": "300px",
                    "series": [{
                        "name": "Revenue",
                        "data": [2100, 3200, 2800, 3900, 3700, 4200, 5100]
                    }],
                    "xaxis": {
                        "categories": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul"]
                    }
                }
            },
            {
                "type": "chart",
                "config": {
                    "title": "User Growth",
                    "type": "line",
                    "height": "300px",
                    "series": [{
                        "name": "Users",
                        "data": [30, 40, 35, 50, 49, 60, 70, 91, 125]
                    }],
                    "xaxis": {
                        "categories": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep"]
                    }
                }
            },
            {
                "type": "table",
                "config": {
                    "title": "Recent Activity",
                    "columns": ["Event", "User", "Time"],
                    "rows": [
                        ["Signup", "John Doe", "2 mins ago"],
                        ["Purchase", "Jane Smith", "15 mins ago"],
                        ["Message", "Bob Johnson", "1 hour ago"]
                    ]
                }
            }
        ]
    }
}
```