@Entity(name = "user_table")
public class User {

    @Id
    @Column(name = "id")
    @GeneratedValue
    Long id;

    @Column(name = "login",nullable = false,unique = true)
    private String login;

    private Map<UserSettingName, Boolean> settingMap = new HashMap<>();
   
   //other fields
}

public enum UserSettingName {
    /*result table specific settings*/
    RESULT_TABLE_SHOW_DNS,
    RESULT_TABLE_SHOW_SYS_NAME,
    RESULT_TABLE_SHOW_IP_ADDRESS,
    RESULT_TABLE_SHOW_UPTIME,
    RESULT_TABLE_SHOW_DESCRITPION,
    RESULT_TABLE_SHOW_SYS_LOCATION
    ;
}

@OneToMany( cascade = CascadeType.ALL, orphanRemoval = true)
@MapKeyEnumerated(EnumType.STRING)

@ElementCollection
@MapKeyEnumerated(EnumType.STRING)
private Map<UserSettingName, Boolean> settingMap = new HashMap<>();