change some vk api properties

src/main/java/ru/nsu/fit/directors/userservice/api/VkApi.java

@@ -9,16 +9,14 @@
 import ru.nsu.fit.directors.userservice.dto.request.RequestVkNotification;
 import ru.nsu.fit.directors.userservice.dto.response.VkNotificationResponse;
 
-import java.util.List;
-
 @Component
 @RequiredArgsConstructor
 @Slf4j
 public class VkApi {
     private final WebClient vkApiClient;
 
-    public List<VkNotificationResponse> sendNotification(RequestVkNotification requestVkNotification) {
-        ParameterizedTypeReference<List<VkNotificationResponse>> reference = new ParameterizedTypeReference<>() {};
+    public VkNotificationResponse sendNotification(RequestVkNotification requestVkNotification) {
+        ParameterizedTypeReference<VkNotificationResponse> reference = new ParameterizedTypeReference<>() {};
         return vkApiClient.post()
             .uri(uriBuilder -> uriBuilder.path("/method/notifications.sendMessage").build())
             .contentType(MediaType.APPLICATION_JSON)

src/main/java/ru/nsu/fit/directors/userservice/dto/request/RequestVkNotification.java

@@ -1,10 +1,8 @@
 package ru.nsu.fit.directors.userservice.dto.request;
 
-import java.util.List;
-
 public record RequestVkNotification(
     String message,
     String access_token,
-    List<Long> userIds
+    String userId
 ) {
 }

src/main/java/ru/nsu/fit/directors/userservice/dto/response/VkNotificationResponse.java

@@ -2,8 +2,10 @@
 
 import lombok.Data;
 
+import java.util.Map;
+
 @Data
 public class VkNotificationResponse {
-    private Long userId;
-    private boolean status;
+    private Map<String, Object> response;
+    private Map<String, Object> error;
 }

src/main/java/ru/nsu/fit/directors/userservice/service/NotificationServiceImpl.java

@@ -1,6 +1,7 @@
 package ru.nsu.fit.directors.userservice.service;
 
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import reactor.core.publisher.Flux;
@@ -18,6 +19,7 @@
 @Service
 @RequiredArgsConstructor
 @ParametersAreNonnullByDefault
+@Slf4j
 public class NotificationServiceImpl implements NotificationService {
     private final NotificationRepository notificationRepository;
     private final UserRepository userRepository;
@@ -31,14 +33,23 @@ public class NotificationServiceImpl implements NotificationService {
     public void handleOrderNotification(OrderNotificationEvent event) {
         User user = userRepository.findById(event.userId()).orElseThrow();
         if (user.getVkUserId() != null) {
-            vkApi.sendNotification(
-                new RequestVkNotification(event.message(), vkServiceKey, List.of(user.getVkUserId()))
-            );
+            try {
+                vkApi.sendNotification(
+                    new RequestVkNotification(event.message(), vkServiceKey, String.valueOf(user.getVkUserId()))
+                );
+            } catch (Exception e) {
+                saveNotification(event, user);
+                log.error(e.getMessage());
+            }
         } else {
-            notificationRepository.save(new Notification().setUser(user).setMessage(event.message()).setWasReceived(false));
+            saveNotification(event, user);
         }
     }
 
+    private void saveNotification(OrderNotificationEvent event, User user) {
+        notificationRepository.save(new Notification().setUser(user).setMessage(event.message()).setWasReceived(false));
+    }
+
     @Override
     public List<NotificationDto> getNotifications() {
         List<Notification> notifications = notificationRepository.findByUserAndWasReceived(