"when" : [{ 
    "blockOptions":{ 
        "method":{ 
            "args":{ 
                "time": "time",
                "day": "day",
                "month": "month",
                "year": "year"
            },
            "name":"isOnce"
        }
    },
    "blockType":"when",
    "fields":[ 
        { 
            "name": "time",
            "type": "24_hours_time",
            "value": "10:20"
        },
        { 
            "name": "day",
            "type": "int",
            "value": 5
        },
        { 
            "name": "month",
            "type": "int",
            "value": 12
        },
        { 
            "name": "year",
            "type": "int",
            "value": 2019
        },
    ]
}]