ios-samples/MTDJsonDemo/task.json

 {
    "title": "Task",
    "sections": [ 
        {
          "elements" : [
            {
                "id" : "task-description",
                "type": "entry",
                "placeholder": "Enter task description"
            },
            {
                "id" : "task-duedate",
                "type": "date",
                "caption": "Due Date",
                "value": "00:00"
            }
         ]
        }
    ]
  }