[
    {
        "Write" = [
            {
                "Data" = [
                    [
                        #;
                        "1";
                        [
                            "1";
                            "2";
                            "3";
                            "10"
                        ];
                        "4";
                        "2"
                    ];
                    [
                        #;
                        "21";
                        [
                            "21";
                            "31"
                        ];
                        "2";
                        "2"
                    ];
                    [
                        #;
                        "50";
                        [
                            "50"
                        ];
                        "1";
                        "1"
                    ];
                    [
                        #;
                        "100500";
                        [
                            "100500";
                            "100500"
                        ];
                        "2";
                        "1"
                    ];
                    [
                        [
                            "u1"
                        ];
                        "2";
                        [
                            "2";
                            "3";
                            "4";
                            "11"
                        ];
                        "4";
                        "4"
                    ];
                    [
                        [
                            "u1"
                        ];
                        "22";
                        [
                            "22";
                            "32"
                        ];
                        "2";
                        "2"
                    ];
                    [
                        [
                            "u1"
                        ];
                        "51";
                        [
                            "51"
                        ];
                        "1";
                        "1"
                    ];
                    [
                        [
                            "u1"
                        ];
                        "100500";
                        [
                            "100500";
                            "100500"
                        ];
                        "2";
                        "2"
                    ]
                ];
                "Type" = [
                    "ListType";
                    [
                        "StructType";
                        [
                            [
                                "user";
                                [
                                    "OptionalType";
                                    [
                                        "DataType";
                                        "String"
                                    ]
                                ]
                            ];
                            [
                                "session_start";
                                [
                                    "DataType";
                                    "Int32"
                                ]
                            ];
                            [
                                "session";
                                [
                                    "ListType";
                                    [
                                        "DataType";
                                        "Int32"
                                    ]
                                ]
                            ];
                            [
                                "session_len";
                                [
                                    "DataType";
                                    "Uint64"
                                ]
                            ];
                            [
                                "distinct_playloads";
                                [
                                    "DataType";
                                    "Uint64"
                                ]
                            ]
                        ]
                    ]
                ]
            }
        ]
    }
]