{
    "type": "Column",
    "items": [{
        "type": "Image",
        "horizontalAlignment": "center",
        "url": "http://shellim.blob.core.windows.net/container1/a_obj_person_action_call300.png",
        "altText": "%2",
        "selectAction": {
            "title": "%2",
            "type": "Action.OpenUrl",
            "url": "callto:%1"
        }
    }]
}