public class GlobalMiddleware
{

    private readonly RequestDelegate _next; 
    private string _requestBody; 


    public GlobalMiddleware(RequestDelegate next)
    {
        _next = next; 
    }

    public async Task Invoke(HttpContext context)
    { 
            if (context.Request.Method == "PUT" || context.Request.Method == "POST"|| context.Request.Method == "PATCH")
            {
                context.Request.EnableBuffering();
                _requestBody = await new StreamReader(context.Request.Body).ReadToEndAsync();
                context.Request.Body.Position = 0;
            }

            await _next(context); 
    }

}