Error deserialize JSON - How to solve?

I'm using jpa and I have these two entities:

@Entity
@JsonIdentityInfo(
  generator = ObjectIdGenerators.PropertyGenerator.class, 
  property = "id")

public class Categoria implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @NotNull
    private int id;
    private String tipo;

    @JsonBackReference
    @OneToMany(mappedBy = "categoria_id")
    private List<Post> categoria_post;
}


    @Entity
@JsonIdentityInfo(
  generator = ObjectIdGenerators.PropertyGenerator.class, 
  property = "id")
public class Post implements Serializable {
    @Id
    @GeneratedValue(strategy =GenerationType.IDENTITY)
    private int id;
    @NotNull
    private String titulo;
    @NotNull
    @JsonManagedReference
    @ManyToOne
    private Categoria categoria_id;
    @NotNull
    private String descricao;
    private String img;
    @ManyToOne
    private Usuario post_usuario;
    private int likes;
}

When I make a post to persist an object in the database, I get this exception:

javax.servlet.ServletException: javax.ws.rs.ProcessingException: Error deserializing object from entity stream. root cause

javax.ws.rs.ProcessingException: Error deserializing object from entity stream. root cause

javax.json.bind.JsonbException: Error deserialize JSON value into type: class com.emerich.model.Category.