Cannot Call Post Service With Fiddler

Try to do the following .Have a service (MVC) that i run locally, so it goes like URL...The MVC looks like this:

Code:
[HttpPost]
public XElement MovieDetails([FromBody] MovieRequest MovieRequest)
{
return _movie.getMovieDetails(MovieRequest.movieid);
}

How do I call the movie id number from fiddler?I am trying it like this:

Or even like [{"MovieRequest":"1"}]
or <MovieRequest>000001</MovieRequest>
or <MovieRequest>000001<MovieRequest>
or <MovieId>000001</MovieId>

and i get this BS