from:

Example config:

Example API controller

public class LogMeController : ApiController{    /// 
    /// We need a complex type for modelbinding because     /// of content-type: "application/x-www-form-urlencoded"     /// in 
         /// 
    public class ComplexType    {        public string Param1 { get; set; }        public string Param2 { get; set; }    }    /// 
    /// Post    /// 
    public void Post([FromBody] ComplexType complexType)    {        //do something    }}