{
    BlockState:{Name:"stone"},
    Time:1,
    Passengers:
    [
        {
            id:"falling_block",
            Time:1,
            BlockState:
            {
                Name:"redstone_block"
            },
            Passengers:
            [
                {
                    id:"falling_block",
                    Time:1,
                    BlockState:
                    {
                        Name:"activator_rail"
                    },
                    Passengers:
                    [
                        {
                            id:"command_block_minecart",
                            Command:"gamerulecommandBlockOutput false"
                        },
                        {
                            id:command_block_minecart,
                            Command:"setblock ~ ~3 ~ command_block{Command:"summon minecraft:falling_block ~2 ~1.5 ~ {Time:-1200,Passengers:[{id:command_block_minecart,Command:\"say the 60 seconds are over\"}], NoGravity:1}"}"
                        },
                        {id:command_block_minecart,
                            Command:"setblock ~2 ~3 ~ redstone_block"
                        },
                        {
                            id:command_block_minecart,
                            Command:"setblock ~2 ~4 ~ activator_rail"
                        },
                        {
                            id:command_block_minecart,
                            Command:"setblock ~ ~ ~1 command_block{Command:"fill ~ ~-3 ~-1 ~ ~ ~ air"}"
                        },
                        {
                            id:command_block_minecart,
                            Command:"setblock ~ ~-1 ~1 redstone_block"
                        },
                        {
                            id:command_block_minecart,
                            Command:"kill @e[type=command_block_minecart,distance=..1]"
                        }
                    ]
                }
            ]
        }
    ]
}``