Passing multiple list of data in a Web API endpoint

Question

I have web api endpoint

[HttpPut]
 public async Task<IHttpActionResult> Rights(
 [FromBody] IEnumerable<Rights> rights,
 [FromBody] IEnumerable<Permissions> permissions)

Any idea how can I pass these two array parameters in the body of the request. My code is something like this

public static async Task Request(this RequestData requestData, Context context)
 {
 var url = requestData.GetAbsoluteUrl();
 byte[] body = Encoding.UTF8.GetBytes(Serialize(requestData.Body, requestData.Body.GetType()));
 using (var client = new CustomWebClient(context, body))
 {
 client.Headers.Add("Content-Type", "application/json");
 await client.UploadAsync(url, requestData.Method.ToString(), body);
 }
 }

Answer 1

public class RequestBody
{
 public IEnumerable<Rights> rights
 public IEnumerable<Permissions> permissions
}

send this class object as RequestData