{
    "grid": [
        {
            "belong_gw": "21881EFF00B3",
            "dev_sn": "21881EFF00B3_gridmeter",
            "type": "gridmeter"
        }
    ],
    "storage": [
        {
            "belong_gw": "21881EFF00B3",
            "dev_sn": "21881EFF00B3_bmsmeter",
            "type": "bmsmeter"
        }
    ]
}