How is @ElementCollection stored?

Question

Here is part of my User Entity, as you can see, it has Enum Roles

@Entity
@NoArgsConstructor
@AllArgsConstructor
@Getter
@Setter
@Table(name = "users")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;
    private String name;
    private String email;
    private String password;
    @ElementCollection(fetch = FetchType.EAGER)
    private List<Role> roles;
}

The table role is missing, I only have one linking table user_roles. How is the data stored if I can't see it? How can I manually change role in PostgreSQL if I can't edit linking table?