diff --git a/src/main/java/me/jweissen/aeticket/dto/response/UserResponseDto.java b/src/main/java/me/jweissen/aeticket/dto/response/UserResponseDto.java
index 3f307b2..b3fb24a 100644
--- a/src/main/java/me/jweissen/aeticket/dto/response/UserResponseDto.java
+++ b/src/main/java/me/jweissen/aeticket/dto/response/UserResponseDto.java
@@ -1,4 +1,4 @@
 package me.jweissen.aeticket.dto.response;
 
-public record UserResponseDto(int id, String firstname, String lastname, String email) {
+public record UserResponseDto(Long id, String firstname, String lastname, String email) {
 }
diff --git a/src/main/java/me/jweissen/aeticket/model/Cart.java b/src/main/java/me/jweissen/aeticket/model/Cart.java
index 1d2f913..50c97d3 100644
--- a/src/main/java/me/jweissen/aeticket/model/Cart.java
+++ b/src/main/java/me/jweissen/aeticket/model/Cart.java
@@ -16,7 +16,7 @@ public class Cart {
     private Long id;
 
     @OneToMany(mappedBy = "cart")
-    @JoinColumn(nullable = false)
+    @Column(nullable = false)
     private List<CartEntry> cartEntries;
 
     @ManyToOne
diff --git a/src/main/java/me/jweissen/aeticket/model/Category.java b/src/main/java/me/jweissen/aeticket/model/Category.java
index d8ec6d1..1658cbe 100644
--- a/src/main/java/me/jweissen/aeticket/model/Category.java
+++ b/src/main/java/me/jweissen/aeticket/model/Category.java
@@ -33,6 +33,5 @@ public class Category {
     private Event event;
 
     @OneToMany(mappedBy = "category")
-    @JoinColumn
     private List<CartEntry> cartEntries;
 }
\ No newline at end of file
diff --git a/src/main/java/me/jweissen/aeticket/model/User.java b/src/main/java/me/jweissen/aeticket/model/User.java
index 9432d09..3a319a1 100644
--- a/src/main/java/me/jweissen/aeticket/model/User.java
+++ b/src/main/java/me/jweissen/aeticket/model/User.java
@@ -42,6 +42,5 @@ public class User {
     private Role role;
 
     @OneToMany(mappedBy = "user")
-    @JoinColumn(nullable = false)
     private List<Cart> carts;
 }
\ No newline at end of file
diff --git a/src/main/java/me/jweissen/aeticket/repository/UserRepository.java b/src/main/java/me/jweissen/aeticket/repository/UserRepository.java
index 24cd7df..54a309f 100644
--- a/src/main/java/me/jweissen/aeticket/repository/UserRepository.java
+++ b/src/main/java/me/jweissen/aeticket/repository/UserRepository.java
@@ -4,5 +4,6 @@ import me.jweissen.aeticket.model.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface UserRepository extends JpaRepository<User, Integer> {
+    User findByToken(String token);
     User findByEmail(String email);
 }
diff --git a/src/main/java/me/jweissen/aeticket/service/AuthService.java b/src/main/java/me/jweissen/aeticket/service/AuthService.java
index e8487a9..f0327d0 100644
--- a/src/main/java/me/jweissen/aeticket/service/AuthService.java
+++ b/src/main/java/me/jweissen/aeticket/service/AuthService.java
@@ -1,6 +1,7 @@
 package me.jweissen.aeticket.service;
 
 import me.jweissen.aeticket.dto.response.LoginResponseDto;
+import me.jweissen.aeticket.model.Role;
 import me.jweissen.aeticket.model.User;
 import me.jweissen.aeticket.repository.UserRepository;
 import org.springframework.stereotype.Service;
@@ -10,12 +11,10 @@ import java.util.Optional;
 @Service
 public class AuthService {
     private final JwtService jwtService;
-    private final UserService userService;
     private final UserRepository userRepository;
 
-    public AuthService(JwtService jwtService, UserService userService, UserRepository userRepository) {
+    public AuthService(JwtService jwtService, UserRepository userRepository) {
         this.jwtService = jwtService;
-        this.userService = userService;
         this.userRepository = userRepository;
     }
 
@@ -31,5 +30,13 @@ public class AuthService {
         return Optional.of(new LoginResponseDto(username));
     }
 
+    public Optional<Role> getRole(String token) {
+        User user = userRepository.findByToken(token);
+        if (user == null) {
+            return Optional.empty();
+        }
+        return Optional.of(user.getRole());
+    }
+
 
 }
diff --git a/src/main/java/me/jweissen/aeticket/service/JwtService.java b/src/main/java/me/jweissen/aeticket/service/JwtService.java
index 866605d..daab216 100644
--- a/src/main/java/me/jweissen/aeticket/service/JwtService.java
+++ b/src/main/java/me/jweissen/aeticket/service/JwtService.java
@@ -14,17 +14,12 @@ import java.util.Optional;
 
 @Service
 public class JwtService {
-    @Value("${token.secret}")
-    private String secret;
-    @Value("${token.validForHours}")
-    private Long tokenValidForHours;
-
     private final JWTVerifier jwtVerifier;
     private final Algorithm algorithm;
     private final String userIdClaimKey = "userId";
     private final Long tokenValidForMillis;
 
-    public JwtService() {
+    public JwtService(@Value("${token.secret}") String secret, @Value("${token.validForHours}") Long tokenValidForHours) {
         tokenValidForMillis = 1000L * 3600 * tokenValidForHours;
         algorithm = Algorithm.HMAC256(secret);
         jwtVerifier = JWT.require(algorithm).build();