{
    "node":
    {
        "initial": [
            "192.168.1.8"
        ],
        "block1": [
            "192.168.1.3"
        ],
        "block2": [
            "192.168.1.4", "192.168.1.5"
        ],
        "block3": [
            "192.168.1.6"
        ]
    }
}