HTTP 400 on hitting Restful post service defined using Spring 4 MVC and MappingJackson2HttpMessageConverter

I'm trying to create a restful controller using Spring 4 MVC and testing it with Fiddler by hitting the below mentioned RestFul Post web service but getting HTTP/1.1 400 Bad Request as response, after i have added MappingJackson2HttpMessageConverter to my dispatcher-servlet.xml. The Response comes up correctly If i use '@RequestBody String resource' instead of '@RequestBody Resource resource' for ResourceController post method arguments. I've added MappingJackson2HttpMessageConverter to dispatcher-servlet.xml since spring was not detecting jackson and was throwing HTTP 415 on hitting this post service.

URL : http://localhost:8080/rma/api/resources/1

Headers :

User-Agent: Fiddler
Host: localhost:8080
Content-Length: 171
Accept: application/json
Content-Type: application/json

Request Body :

{
"firstName" : "first",
"middleName" : "middle",
"lastName" : "last",
"email": "first@last.com",
"dateOfBirth": "09-10-1988",  
"titleRole" : "software engineer"
}

dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://ift.tt/GArMu6"
        xmlns:xsi="http://ift.tt/ra1lAU" xmlns:context="http://ift.tt/GArMu7"
        xmlns:mvc="http://ift.tt/1bHqwjR"
        xsi:schemaLocation="http://ift.tt/GArMu6 http://ift.tt/1jdM0fG 
        http://ift.tt/GArMu7 http://ift.tt/1jdLYo7
        http://ift.tt/1bHqwjR
        http://ift.tt/1fmimld">

        <context:annotation-config />
        <context:component-scan base-package="com.pkg.controller" />
        <mvc:annotation-driven/>

        <bean
    class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
            <property name="messageConverters">
                <list>
                    <bean
                        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
                </list>
            </property>
        </bean>
        <bean id="resourceDao" class="com.pkg.dao.ResourceDaoImpl">
            <property name="dataSource" ref="dataSource" />
        </bean>

        <bean id="dataSource"
            class="org.springframework.jdbc.datasource.DriverManagerDataSource">
            <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
            <property name="url" value="jdbc:mysql://localhost/rma?"></property>
            <property name="username" value="root"></property>
            <property name="password" value="root"></property>
        </bean>
    </beans>

ResourceController.class

@RestController
@RequestMapping("/resources")
public class ResourceController {

@Autowired
private final ResourceDao resourceDao; 

    @Autowired
    public ResourceController(ResourceDao resourceDao) {
        this.resourceDao = resourceDao;
    }

    //get resources for a resource id
    @RequestMapping(value ="/{hiringManager}", method = RequestMethod.GET, produces="application/json")
    public List<Resource> getResources(@PathVariable String hiringManager){
        return resourceDao.getResources(hiringManager);
    }

    //post a new resource for a resource id
    @RequestMapping(value ="/{hiringManager}",method = RequestMethod.POST, consumes="application/json",produces="application/json")
    public  ResponseEntity<Resource>   addResources(@PathVariable String hiringManager, @RequestBody Resource resource){
        System.out.println("In controller" + hiringManager + " > Adding " +resource.toString());
        return new ResponseEntity<Resource>(resource,HttpStatus.CREATED);
    }


}

WebApplicationInitializer.class

public class ApplicationInitializer  implements WebApplicationInitializer {



    public void onStartup(ServletContext servletContext)
            throws ServletException {

        //Registering Dispatcher Servlet
        try{
            ServletRegistration.Dynamic registration = servletContext.addServlet("dispatcher", new DispatcherServlet());
            registration.setLoadOnStartup(1);
            registration.addMapping("/api/*"); // URL mapping
        } catch(Exception e){
            e.printStackTrace();
        }


    }



}