'How can I Post parameter in httpClient where in postman use param

I want to post my parameter with HttpClient . what is the Content in httpclient request body? I wrote it int the body part and when I run the project I get Error.enter image description here

my code is:

string baseAddress = "https://WebServiceAddress";
Client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", token);
HttpRequestMessage bodyRequest = new HttpRequestMessage(HttpMethod.Post, baseAddress)

bodyRequest.Content = new StringContent(JsonConvert.SerializeObject(Prescriptionrequest), Encoding.UTF8, "application/json");

var responseApi = Client.PostAsync(baseAddress, bodyRequest.Content, new System.Threading.CancellationToken(false));

what should be the format of bodyRequest.Content?



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