diff --git a/account-service/src/main/java/com/drinkool/services/CustomerService.java b/account-service/src/main/java/com/drinkool/services/CustomerService.java
index ee9f58d..a57abc9 100644
--- a/account-service/src/main/java/com/drinkool/services/CustomerService.java
+++ b/account-service/src/main/java/com/drinkool/services/CustomerService.java
@@ -65,7 +65,6 @@ public class CustomerService extends BaseService<CustomerEntity> {
 		return Response.accepted()
 			.header(InternalValue.userId, customer.id.toString())
 			.header(InternalValue.role, Role.Customer)
-			.entity(customer)
 			.build();
 	}
 
diff --git a/account-service/src/main/java/com/drinkool/services/ManagerService.java b/account-service/src/main/java/com/drinkool/services/ManagerService.java
index e22f021..99890ec 100644
--- a/account-service/src/main/java/com/drinkool/services/ManagerService.java
+++ b/account-service/src/main/java/com/drinkool/services/ManagerService.java
@@ -68,7 +68,6 @@ public class ManagerService extends BaseService<ManagerEntity> {
 		return Response.accepted()
 			.header(InternalValue.userId, manager.id.toString())
 			.header(InternalValue.role, Role.Manager)
-			.entity(manager)
 			.build();
 	}
 
diff --git a/account-service/src/main/java/com/drinkool/services/StaffService.java b/account-service/src/main/java/com/drinkool/services/StaffService.java
index e948890..b8bcaef 100644
--- a/account-service/src/main/java/com/drinkool/services/StaffService.java
+++ b/account-service/src/main/java/com/drinkool/services/StaffService.java
@@ -67,7 +67,6 @@ public class StaffService extends BaseService<StaffEntity> {
 			.header(InternalValue.userId, staff.id.toString())
 			.header(InternalValue.managerId, staff.serve.id.toString())
 			.header(InternalValue.role, Role.Staff)
-			.entity(staff)
 			.build();
 	}
 }
diff --git a/cart-service/src/main/java/com/drinkool/services/CartService.java b/cart-service/src/main/java/com/drinkool/services/CartService.java
index 267eec9..5c8124c 100644
--- a/cart-service/src/main/java/com/drinkool/services/CartService.java
+++ b/cart-service/src/main/java/com/drinkool/services/CartService.java
@@ -15,7 +15,6 @@ import jakarta.inject.Inject;
 import jakarta.ws.rs.core.Response;
 import java.time.Duration;
 import java.util.ArrayList;
-import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.eclipse.microprofile.graphql.GraphQLApi;
@@ -63,7 +62,7 @@ public class CartService {
 
 				String cartId = UUID.randomUUID().toString();
 				String redisKey = "cart:" + cartId;
-				String ownerId = response.readEntity(String.class);
+				String ownerId = response.getEntity().toString();
 
 				hashCommands.hset(
 					redisKey,
diff --git a/cart-service/src/test/java/com/drinkool/services/CartServiceTest.java b/cart-service/src/test/java/com/drinkool/services/CartServiceTest.java
index 62c999b..daa25b1 100644
--- a/cart-service/src/test/java/com/drinkool/services/CartServiceTest.java
+++ b/cart-service/src/test/java/com/drinkool/services/CartServiceTest.java
@@ -7,6 +7,7 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.Mockito.when;
 
 import com.drinkool.controllers.EateryController;
+import com.drinkool.controllers.ManagerController;
 import com.drinkool.dtos.Cart;
 import io.quarkus.redis.datasource.RedisDataSource;
 import io.quarkus.redis.datasource.hash.HashCommands;
@@ -40,6 +41,11 @@ public class CartServiceTest {
 	@RestClient
 	EateryController eateryController;
 
+
+	@InjectMock
+	@RestClient
+	ManagerController managerController;
+
 	@Inject
 	RedisDataSource redisDataSource;
 
@@ -59,7 +65,7 @@ public class CartServiceTest {
 		UUID eateryId = UUID.randomUUID();
 
 		when(eateryController.getEateryById(eateryId)).thenReturn(
-			Uni.createFrom().item(Response.ok().build())
+			Uni.createFrom().item(Response.ok(UUID.randomUUID()).build())
 		);
 
 		String cartId = cartService
@@ -129,7 +135,7 @@ public class CartServiceTest {
 		hashCommands.hset(key, "_metadata_owner", UUID.randomUUID().toString());
 
 		when(eateryController.checkMenuItemExists(eateryId, menuItemId)).thenReturn(
-			Uni.createFrom().item(Response.ok().build())
+			Uni.createFrom().item(Response.ok(17.0).build())
 		);
 
 		Cart result = cartService