Java – Spring boot Unsupported Media Type with @RequestBody

I checked in several different ways, also downloaded a new project to see what to check where is bug but I still do not know the answer.

That is my RestController

@RestController
@RequestMapping(value = "/message")
public class MessageController {

    @RequestMapping(value = "/", method = RequestMethod.POST)
    public void createMessage(@RequestBody Message message){
        System.out.println(message);
    }
}

That is my Model

@Data
@Entity
public class Message {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    private String sender;
    private String telephone;
    private String message;
}

Gradle dependencies if necessary

dependencies {
    compile group: 'com.fasterxml.jackson.core', name: 'jackson-core', version: '2.9.0.pr3'
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('org.springframework.boot:spring-boot-starter-web')
    runtime('com.h2database:h2')
    runtime('org.postgresql:postgresql')
    compileOnly('org.projectlombok:lombok')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

and in postman i'm getting that error

{ "timestamp": 1495992553884, "status": 415, "error":
"Unsupported Media Type", "exception":
"org.springframework.web.HttpMediaTypeNotSupportedException",
"message": "Content type
'application/x-www-form-urlencoded;charset=UTF-8' not supported",
"path": "/message/" }

It is simplest way for rest but where I make a mistake?