var json = new PushModel
{
	head = "测试标题",
	body = "测试内容" + DateTime.Now,
	url = ""
};
string temp = JsonConvert.SerializeObject(json);
HttpContent content = new StringContent(temp, Encoding.UTF8, "application/json");
var response = await httpClient.PostAsync("https://www.phprm.com/services/push/send/4d05f4abdb0a0c2a0269900809946903", content);
string res = await response.Content.ReadAsStringAsync();
Console.WriteLine("推送状态：" + response.StatusCode);
Console.WriteLine(res);