async def describe_subnet(ns={}):
    import aiohttp
    NETWORK_URL = 'http://cdsapi.capitalonline.net/vpc'
    action = 'DescribeSubnet'
    method = "POST"
    param = {}
    url = get_signature(action, method, NETWORK_URL, param=param)
    body = {
        "RegionCode": ns.get('RegionCode'),
        "Keyword": ns.get('Keyword'),
        "PageNumber": int(ns.get('PageNumber')) if ns.get('PageNumber') else 1,
        "VPCId": ns.get('VPCId'),
        "AvailableZoneCode": ns.get('AvailableZoneCode')
    }
    async with aiohttp.ClientSession() as session:
        async with session.request(method, url, json=body) as response:
            resp = await response.text()
            result = json.loads(resp)
            if result['Code'] == 'Success':
                result['status'] = True
                result.pop('Code')
                result['data'] = result.pop('Data')
                if result['data']['Total'] > 0:
                    new_sub_li = []
                    for sub in result['data']['SubnetList']:
                        if ns['orgid'] in sub['VPCName']:
                            sub['VPCName'] = sub['VPCName'][-7:]
                            new_sub_li.append(sub)
                    result['data']['SubnetList'] = new_sub_li
                    result['data']['Total'] = len(new_sub_li)
                result['msg'] = result.pop('Message')
            else:
                result['status'] = False
                result['msg'] = result.pop('Message')
            return result

ret = await describe_subnet(params_kw)
return ret