RestTemplate postForObject unable to map Custom class apart from String.class

I was trying to consume firebase Auth API using RestTemplate postForObject, but when I assign String.class as return type its working file but if I assign my custom class to handle the response its failed, although custom class property are same as the JSON return,

restTemplate.postForObject( uri, request, UserResponse.class);

public class UserResponse {
private String kind;
private String localId;
private String email;
private String displayName;
private String idToken;
private Boolean registered;
public String getKind() {
return kind;
}
public void setKind(String kind) {
this.kind = kind;
}
public String getLocalId() {
return localId;
}
public void setLocalId(String localId) {
this.localId = localId;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getDisplayName() {
return displayName;
}
public void setDisplayName(String displayName) {
this.displayName = displayName;
}
public String getIdToken() {
return idToken;
}
public void setIdToken(String idToken) {
this.idToken = idToken;
}
public Boolean getRegistered() {
return registered;
}
public void setRegistered(Boolean registered) {
this.registered = registered;
}
}

Can any one where I am wrong;

Exceptions:

2020-04-09 16:06:06.980 ERROR 18200 --- [           main] o.s.boot.SpringApplication               : Application run failed
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:787) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:768) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:322) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at aaa.Application.main(Application.java:10) ~[classes/:na]
Caused by: org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class aaa.model.UserResponse] and content type [application/json;charset=UTF-8]
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:123) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:741) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:674) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:418) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at aaa.config.Bootstrap.run(Bootstrap.java:49) ~[classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:784) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
... 5 common frames omitted

Add jackson dependency.

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.3</version>
</dependency>