如何忽略create jira api请求负载中的额外字段？

import json
import requests

def ignore_extra_fields(payload):
    # 解析请求负载为JSON对象
    json_payload = json.loads(payload)

    # 保留的字段列表
    allowed_fields = ['field1', 'field2', 'field3']

    # 创建新的JSON对象，只保留需要的字段
    new_payload = {}
    for key, value in json_payload.items():
        if key in allowed_fields:
            new_payload[key] = value

    # 将新的JSON对象转换为字符串
    new_payload_str = json.dumps(new_payload)

    return new_payload_str

# 原始请求负载
payload = '{"field1": "value1", "field2": "value2", "field3": "value3", "field4": "value4"}'

# 忽略额外字段
new_payload = ignore_extra_fields(payload)

# 发送修改后的请求负载到Jira的create API端点
url = 'https://your-jira-instance/rest/api/2/issue'
headers = {'Content-Type': 'application/json'}
response = requests.post(url, headers=headers, data=new_payload)

print(response.text)