header:
 "appId": "外系统ID，分配得到",
 "transactionId": "100000000020180409224736000001",
 "requestTime": "20180409224736",
  "userId": "用户ID"

body:
{
"orders": {
    "orderTypeCd": "订单类型,查询,受理",
    "remark":"备注",
    "attrs": [{
      "specCd": "配置的字段ID",
      "value": "具体值"
    }]
  },
  "business": [{
    "businessTypeCd": "B",
    "invokeModel":"S",
    "remark": "备注",
        "seq":1,
    "datas": {
    },
    "attrs": [{
      "specCd": "配置的字段ID",
      "value": "具体值"
    }]
  }]
}