HTTPClient帖子响应不可读

我正在用邮递员发送一个正常工作的回复。当我尝试用c#重新创建它时,响应表示成功,但内容难以辨认。

\u001f�\b\0\0\0\0\0\0\0uT�s�0\u0010~�_���v���O\u0017\u0011�Z�\fPo�n:�\bk�+$\u000e�^���\u0011J\u00144�i�v��v��...

我创建请求如下:

HttpClient client = new HttpClient();
var tokenRequest = new HttpRequestMessage(HttpMethod.Post, url);
tokenRequest.Content = new StringContent(JsonConvert.SerializeObject(new object {});
var tokenResponse = await client.SendAsync(tokenRequest);
tokenResponse.EnsureSuccessStatusCode();
var content = await tokenResponse.Content.ReadAsStringAsync();

邮递员的回复如下:

{
    "token": "sometoken",
    "type": "Bearer",
    ...
}