diff --git a/src/main/java/org/ntlab/acanthus_server/entities/InvitesJson.java b/src/main/java/org/ntlab/acanthus_server/entities/InvitesJson.java
new file mode 100644
index 0000000..48a4d53
--- /dev/null
+++ b/src/main/java/org/ntlab/acanthus_server/entities/InvitesJson.java
@@ -0,0 +1,25 @@
+package org.ntlab.acanthus_server.entities;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.Collection;
+
+public class InvitesJson {
+
+    @JsonProperty("invites")
+    private Collection<Integer> invites;
+
+    public  InvitesJson(Collection<Account> accounts) {
+        for(Account inviter : accounts){
+            this.invites.add(inviter.getUid());
+        }
+    }
+
+    public Collection<Integer> getInvitesJson() {
+        return invites;
+    }
+
+    public void setInvitesJson(Integer uid){
+        this.invites.add(uid);
+    }
+}
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/InvitesRest.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/InvitesRest.java
index 6109de2..eb3a411 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/gallery/InvitesRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/InvitesRest.java
@@ -1,12 +1,11 @@
 package org.ntlab.acanthus_server.resources.gallery;
 
-import org.ntlab.acanthus_server.entities.Account;
-import org.ntlab.acanthus_server.entities.Animation;
-import org.ntlab.acanthus_server.entities.Editor;
-import org.ntlab.acanthus_server.entities.Work;
+import org.ntlab.acanthus_server.entities.*;
 import org.ntlab.acanthus_server.models.Accounts;
 import org.ntlab.acanthus_server.models.Gallery;
 import org.springframework.stereotype.Component;
+import org.ntlab.acanthus_server.entities.InvitesJson;
+
 
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
@@ -34,14 +33,14 @@
     @Path("/{aid}/invites")
     @GET
     @Produces(MediaType.APPLICATION_JSON)
-    public Collection<Account> isGalleryInvites(@PathParam("aid") Integer aid, @QueryParam("invitedUid") String invitedUid, @QueryParam("invitedUserToken") String invitedUserToken, @QueryParam("ownerToken") String ownerToken) {
+    public InvitesJson isGalleryInvites(@PathParam("aid") Integer aid, @QueryParam("invitedUid") String invitedUid, @QueryParam("invitedUserToken") String invitedUserToken, @QueryParam("ownerToken") String ownerToken) {
         Animation animation = animations.getAnimationByAid(aid);
 
         //招待した人を確認する
         if (invitedUid == null && invitedUserToken == null) {
             Account owner = animation.getOwner();
             if (owner != null && owner.getToken().equals(ownerToken)) {
-                return animation.getInvites();
+                return new InvitesJson(animation.getInvites());
             } else {
                 throw new WebApplicationException(404);
             }
@@ -52,7 +51,7 @@
             Account invitedAccount = accounts.getAccountByUid(Integer.parseInt(invitedUid));
             if (invitedAccount != null && invitedAccount.getToken().equals(invitedUserToken)) {
                 //相手の作品の招待リストの中に自分が存在する
-                return animation.searchAnimationInvites(invitedAccount);
+                return new InvitesJson(animation.searchAnimationInvites(invitedAccount));
             } else {
                 //相手の作品の招待リストの中に自分が存在しない
                 throw new WebApplicationException(404);
@@ -141,4 +140,4 @@
 
         }
     }
-}
\ No newline at end of file
+}