树数据遍历，提取key值

Question

[
    {
        "conditon":"and",
        "parentId":0,
        "id":0,
        "request":[
            {
                "parentId":0,
                "id":"fde0803a-b506-43fe-af96-6a0702afd50c",
                "param4":"!=",
                "param5":[
                    "var_config",
                    "order",
                    "bizType"
                ]
            },
            {
                "parentId":"2dc25bbc-ff0a-4d32-b3d3-62ddef535ecc",
                "conditon":"and",
                "id":"56fb640c-9bae-483c-ab25-d3b62d6416d5",
                "request":[
                    {
                        "parentId":"2dc25bbc-ff0a-4d32-b3d3-62ddef535ecc",
                        "id":"507acd88-3339-407c-acbc-899c05f46fdb",
                        "param4":"!=",
                        "param5":[
                            "var_config",
                            "order",
                            "bizType"
                        ]
                    }
                ]
            }
        ]
    }
]

如何从上面的数据中 conditon，param5，param4连起来， and {
"conditon": "and",
"param5": ["var_config", "order", "bizType"] },
"param4": "=",
}