以这个格式，再写三个请求方式为POST的JSON接口示例表

好的，以下是三个请求方式为POST的JSON接口示例表：

1. 用户注册接口

URL: /api/register

请求体:

{
  "username": "example_user",
  "password": "example_password",
  "email": "example_email@example.com"
}

响应体:

{
  "status": "success",
  "message": "User registered successfully"
}

2. 创建文章接口

URL: /api/articles

请求体:

{
  "title": "Example Title",
  "content": "This is an example article content.",
  "author": "example_user"
}

响应体:

{
  "status": "success",
  "message": "Article created successfully"
}

3. 发送邮件接口

URL: /api/send_email

请求体:

{
  "from": "example_sender@example.com",
  "to": "example_receiver@example.com",
  "subject": "Example Subject",
  "body": "This is an example email body."
}

响应体:

{
  "status": "success",
  "message": "Email sent successfully"
}