{ "cmd":"new_card", "bg_color": 13, "responseTopic": "/card_new1", "elements": [ { "id": 0, "type": "calendar", "position": { "x": 60, "y": 70 }, "size": 3, "value": "hello", "date": { "year": 2019, "month": 6, "day": 30 } } ] }