{
  "user": {
    "id": 12345,
    "firstName": "Maria",
    "lastName": "Garcia",
    "email": "[email protected]",
    "age": 30,
    "active": true,
    "roles": [
      "USER",
      "ADMIN"
    ],
    "address": {
      "street": "123 Main Street",
      "city": "New York",
      "state": "NY",
      "zipCode": "10001"
    }
  }
}

import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.List;

public class User {
    @JsonProperty("id")
    private Integer id;

    @JsonProperty("firstName")
    private String firstName;

    @JsonProperty("lastName")
    private String lastName;

    @JsonProperty("email")
    private String email;

    @JsonProperty("active")
    private Boolean active;

    @JsonProperty("roles")
    private List<String> roles;

    @JsonProperty("address")
    private Address address;

    // Default constructor
    public User() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    // ... other getters and setters
}