{
  "success": true,
  "statusCode": 200,
  "message": "Dashboard config updated successfully",
  "data": {
    "dashboardConfig": {
      "version": 1,
      "templateId": "executive_focus",
      "slots": [
        {
          "id": "hero",
          "type": "operationsOverview",
          "enabled": true,
          "span": "full",
          "settings": {
            "range": "2weeks"
          }
        }
      ]
    }
  }
}

{
  "success": false,
  "statusCode": 400,
  "message": "Missing userId",
  "data": null
}

{
  "success": false,
  "statusCode": 500,
  "message": "Failed to update dashboard config",
  "data": null
}