{
    "nome": "BORUTO",
    "status": "COMPLETO",
    "dataLancado": "2015",
    "genero" : [{"id":1, "nome":"TERROR"},{"id":"2", "nome":"ACAO"}]
   }

<label ng-repeat="genero in generolist ">
        <input type="checkbox" checklist-model="selected.generos" checklist-value="genero" ng-model="manga.genero[selected.generos.id]"/> {{genero.nome}}
     </label>
     <pre>{{selected.generos|json}}</pre>

    <input type="button" value="Salvar" ng-click="salvarMangas()"/>

2017-11-20 13:18:07.146  WARN 4324 --- [nio-8080-exec-9] .w.s.m.s.DefaultHandlerExceptionResolver : Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: java.io.PushbackInputStream@659aad31; line: 1, column: 11] (through reference chain: com.mangastech.model.MangasEntity["genero"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: java.io.PushbackInputStream@659aad31; line: 1, column: 11] (through reference chain: com.mangastech.model.MangasEntity["genero"])
2017-11-20 13:18:07.147  WARN 4324 --- [nio-8080-exec-9] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: java.io.PushbackInputStream@659aad31; line: 1, column: 11] (through reference chain: com.mangastech.model.MangasEntity["genero"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: java.io.PushbackInputStream@659aad31; line: 1, column: 11] (through reference chain: com.mangastech.model.MangasEntity["genero"])

$scope.mangas = [];
        $scope.manga = {};
        $scope.generolist = [
                {id:1, nome: 'TERROR'}
        ];

        $scope.selected = {
                generos : []
        };

        $scope.salvarMangas= function() {
            $http({
                  method: 'POST', url: 'http://localhost:8080/manga',data:$scope.manga})
                  .then(function (response) {
                    $scope.mangas.push(response.data);
                     /*carregarClientes();

                      $scope.manga={};*/

                  }, function (response) {
                    console.log(response.data);
                    console.log(response.status);
                  });
            };

//Cadastra novo Manga
    @RequestMapping(value="/manga", method=RequestMethod.POST)
    public MangasEntity cadastrarManga(@Valid @RequestBody MangasEntity manga){
        return mangaRepository.save(manga);
    }

public class MangasEntity implements Serializable {

    private static final long serialVersionUID = 1L;
    private Long id;
    private String nome;
    private  Status status;
    private int dataLancado;

    @JsonIgnoreProperties("manga")
    private  AutorEntity autor;

    private List<GenerosEntity> genero = new ArrayList<>();

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name="id")
    public Long getId() {
        return id;
    }

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

    @Column(name="nome")
    public String getNome() {
        return nome;
    }

    public void setNome(String nome) {
        this.nome = nome;
    }

    @Enumerated(EnumType.STRING)
    @Column(name="status")
    public Status getStatus() {
        return status;
    }


    public void setStatus(Status status) {
        this.status = status;
    }

    @Column
    public int getDataLancado() {
        return dataLancado;
    }

    public void setDataLancado(int dataLancado) {
        this.dataLancado = dataLancado;
    }

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinTable(name="mangas_autor",
    joinColumns=@JoinColumn(name="manga_id",referencedColumnName="id"),
    inverseJoinColumns = @JoinColumn(name="autor_id",referencedColumnName="id"))

    public AutorEntity getAutor() {
        return autor;
    }

    public void setAutor(AutorEntity autor) {
        this.autor = autor;
    }


    @ManyToMany(targetEntity = GenerosEntity.class)
    @JoinTable(name="mangas_generos",
    joinColumns=@JoinColumn(name="manga_id", referencedColumnName="id"),
    inverseJoinColumns=@JoinColumn(name="genero_id", referencedColumnName="id")
    )

    public List<GenerosEntity> getGenero() {
        return this.genero;
    }


    public void setGenero(List<GenerosEntity> genero) {
        this.genero = genero;
    }

    public MangasEntity() {
        super();
    }


    public MangasEntity(Long id, String nome, Status status, int dataLancado, AutorEntity autor,
            List<GenerosEntity> genero) {
        super();
        this.id = id;
        this.nome = nome;
        this.status = status;
        this.dataLancado = dataLancado;
        this.autor = autor;
        this.genero = genero;
    }

    public MangasEntity(Long id){
        this.id = id;
    }
}

public class GenerosEntity implements Serializable {


    private static final long serialVersionUID = 1L;
    private Long id;
    private String nome;

    @JsonIgnore
    private List<MangasEntity> manga  ;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    public Long getId() {
        return id;
    }

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

    @Column(name="nome")
    public String getNome() {
        return nome;
    }

    public void setNome(String nome) {
        this.nome = nome;
    }

    @ManyToMany(mappedBy="genero", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    public List<MangasEntity> getManga() {
        return manga;
    }

    public void setManga(List<MangasEntity> manga) {
        this.manga = manga;
    }

    public GenerosEntity() {

    }

    public GenerosEntity(Long id) {
            this.id = id;
    }

}