PageUpdate

{
    "name": "Launch Status",
    "subtitle": "See the status of launch-related tasks.",
    "iconName": "rocket",
    "imageUrl": "https://example.com/image.jpg",
    "isHidden": true,
    "contentUpdate": {
        "insertionMode": "append",
        "canvasContent": {
            "format": "html",
            "content": "<p><b>This</b> is rich text</p>"
        }
    }
}