如何使用Desk API v2

是否有人成功使用Desk的公共API搜索客户或公司？我正在使用RestSharp库提交请求，这对于创建新公司或按ID提取个别案例很有效。以下是我尝试做的示例。

RestClient client = new RestClient();
client.Authenticator = RestSharp.Authenticators.OAuth1Authenticator.ForProtectedResource(Configuration.ApiKey, Configuration.SiteKey, Configuration.Token, Configuration.TokenSecret);
client.BaseUrl = "https://imathlete.desk.com/api/v2";
string json = new JavaScriptSerializer().Serialize(new Dictionary<string, object> {
    { "q", "my company" }
});
RestRequest request = new RestRequest {
    Method = Method.GET
    , Resource = "companies/search"
    , RequestFormat = DataFormat.Json
};
request.AddBody(json);
RestResponse response = (RestResponse)client.Execute(request);
string data = System.Text.Encoding.ASCII.GetString(response.RawBytes);

我试着把请求正文中的"q"换成"name"或"domain"，但响应总是一样的：

{"message":"Invalid search parameters"}

如有任何建议，我们将不胜感激。

Resource = "companies/search"

Resource = "companies/search?"