[
    {
        "Write" = [
            {
                "Data" = [
                    [
                        "bbb";
                        "u12";
                        "v12"
                    ];
                    [
                        "ccc";
                        "u13";
                        "v13"
                    ]
                ];
                "Type" = [
                    "ListType";
                    [
                        "StructType";
                        [
                            [
                                "a.k1";
                                [
                                    "DataType";
                                    "String"
                                ]
                            ];
                            [
                                "a.u1";
                                [
                                    "DataType";
                                    "String"
                                ]
                            ];
                            [
                                "a.v1";
                                [
                                    "DataType";
                                    "String"
                                ]
                            ]
                        ]
                    ]
                ]
            }
        ]
    }
]