任务：

{
    "action": "create_topic",
    "pTablename": "article",
    "pTable": {
        "pkey": "id",
        "title": "title",
        "createtime": "createtime",
        "imgurl": "imgurl",
        "imgsdata": "imgsdata"
    },
    "pTableInit": {
        "catid": 6
    },
    "dTablename": "article_data",
    "dTable": {
        "pkey": "id",
        "content": "content"
    }
}