{
  "robotId": "YOUR_ROBOT_ID",
  "messageId": "create-group-001",
  "meta": "{\"source\":\"your-system\",\"businessId\":\"ORDER-001\"}",
  "callbackUrl": "https://your-domain.com/callback",
  "callbackSecret": "YOUR_CALLBACK_SECRET",
  "list": [
    {
      "type": 206,
      "groupName": "客户服务群",
      "selectList": [],
      "groupAnnouncement": "欢迎加入",
      "groupRemark": "API 创建"
    }
  ]
}