如何将嵌套结构的加特林jsonFeeder转换为json请求体？

import json

def convert_json_feeder_to_request_body(feeder_data):
    request_body = {}  # 创建空的JSON对象作为请求体

    def parse_data(data, current_node):
        if isinstance(data, dict):
            for key, value in data.items():
                if isinstance(value, dict) or isinstance(value, list):
                    current_node[key] = {}
                    parse_data(value, current_node[key])
                else:
                    current_node[key] = value
        elif isinstance(data, list):
            for index, value in enumerate(data):
                if isinstance(value, dict) or isinstance(value, list):
                    current_node[index] = {}
                    parse_data(value, current_node[index])
                else:
                    current_node[index] = value

    parse_data(feeder_data, request_body)
    return json.dumps(request_body)

# 示例数据
feeder_data = {
    "key1": "value1",
    "key2": {
        "subkey1": "subvalue1",
        "subkey2": [
            "item1",
            "item2"
        ]
    }
}

request_body = convert_json_feeder_to_request_body(feeder_data)
print(request_body)