diff --git a/neon_users_service/databases/sqlite.py b/neon_users_service/databases/sqlite.py
index ce6d28c..33074f3 100644
--- a/neon_users_service/databases/sqlite.py
+++ b/neon_users_service/databases/sqlite.py
@@ -15,7 +15,7 @@ class SQLiteUserDatabase(UserDatabase):
     def __init__(self, db_path: Optional[str] = None):
         db_path = expanduser(db_path or "~/.local/share/neon/user-db.sqlite")
         makedirs(dirname(db_path), exist_ok=True)
-        self.connection = connect(db_path)
+        self.connection = connect(db_path, check_same_thread=False)
         self._db_lock = Lock()
         self.connection.execute(
             '''CREATE TABLE IF NOT EXISTS users
diff --git a/neon_users_service/models.py b/neon_users_service/models.py
index d9e38ef..5e2a437 100644
--- a/neon_users_service/models.py
+++ b/neon_users_service/models.py
@@ -112,11 +112,16 @@ class PermissionsConfig(BaseModel):
 
 
 class TokenConfig(BaseModel):
-    description: str
+    username: str
     client_id: str
-    expiration_timestamp: int
+    permissions: dict
     refresh_token: str
-    last_used_timestamp: int
+    expiration: int
+    refresh_expiration: int
+    token_name: str
+    creation_timestamp: int
+    last_refresh_timestamp: int
+    access_token: Optional[str] = None
 
 
 class User(BaseModel):
diff --git a/neon_users_service/mq_connector.py b/neon_users_service/mq_connector.py
index 4fa8ca0..2a3e97f 100644
--- a/neon_users_service/mq_connector.py
+++ b/neon_users_service/mq_connector.py
@@ -5,6 +5,7 @@
 from ovos_config.config import Configuration
 from neon_mq_connector.connector import MQConnector
 from neon_mq_connector.utils.network_utils import b64_to_dict, dict_to_b64
+from neon_users_service.exceptions import UserNotFoundError, AuthenticationError, UserNotMatchedError, UserExistsError
 from neon_users_service.models import MQRequest, User
 
 from neon_users_service.service import NeonUsersService
@@ -27,45 +28,46 @@ def parse_mq_request(self, mq_req: dict) -> dict:
                     "error": f"Supplied username ({mq_req.username}) "
                              f"Does not match user object "
                              f"({mq_req.user.username})"}
-
-        if mq_req.operaion == "create":
-            if not mq_req.password:
-                return {"success": False,
-                        "error": "Empty password provided"}
-            if not mq_req.user:
-                mq_req.user = User(username=mq_req.username,
-                                   password_hash=mq_req.password)
-            mq_req.user.password_hash = mq_req.password
-            try:
+        try:
+            if mq_req.operation == "create":
+                if not mq_req.password:
+                    return {"success": False,
+                            "error": "Empty password provided"}
+                if not mq_req.user:
+                    mq_req.user = User(username=mq_req.username,
+                                       password_hash=mq_req.password)
+                mq_req.user.password_hash = mq_req.password
                 user = self.service.create_user(mq_req.user)
-            except Exception as e:
-                return {"success": False, "error": repr(e)}
-        elif mq_req.operation == "read":
-            try:
+            elif mq_req.operation == "read":
                 if mq_req.password:
                     user = self.service.read_authenticated_user(mq_req.username,
                                                                 mq_req.password)
                 else:
                     user = self.service.read_unauthenticated_user(
                         mq_req.username)
-            except Exception as e:
-                return {"success": False, "error": repr(e)}
-        elif mq_req.operation == "update":
-            try:
+            elif mq_req.operation == "update":
                 if mq_req.password:
                     mq_req.user.password_hash = mq_req.password
                 user = self.service.update_user(mq_req.user)
-            except Exception as e:
-                return {"success": False, "error": repr(e)}
-        elif mq_req.operation == "delete":
-            try:
+            elif mq_req.operation == "delete":
                 user = self.service.delete_user(mq_req.user)
-            except Exception as e:
-                return {"success": False, "error": repr(e)}
-        else:
-            raise RuntimeError(f"Invalid operation requested: "
-                               f"{mq_req.operation}")
-        return {"success": True, "user": user.model_dump()}
+            else:
+                raise RuntimeError(f"Invalid operation requested: "
+                                   f"{mq_req.operation}")
+            return {"success": True, "user": user.model_dump()}
+        except UserExistsError:
+            return {"success": False, "error": "User already exists",
+                    "code": 409}
+        except UserNotFoundError:
+            return {"success": False, "error": "User does not exist",
+                    "code": 404}
+        except UserNotMatchedError:
+            return {"success": False, "error": "Invalid user", "code": 401}
+        except AuthenticationError:
+            return {"success": False, "error": "Invalid username or password",
+                    "code": 401}
+        except Exception as e:
+            return {"success": False, "error": repr(e), "code": 500}
 
     def handle_request(self,
                        channel: pika.channel.Channel,
@@ -87,18 +89,20 @@ def handle_request(self,
             request = b64_to_dict(body)
             message_id = request.get("message_id")
             response = self.parse_mq_request(request)
+            response["message_id"] = message_id
             data = dict_to_b64(response)
 
+            routing_key = request.get('routing_key', 'neon_users_output')
             # queue declare is idempotent, just making sure queue exists
-            channel.queue_declare(queue='neon_users_output')
+            channel.queue_declare(queue=routing_key)
 
             channel.basic_publish(
                 exchange='',
-                routing_key=request.get('routing_key',
-                                        'neon_users_output'),
+                routing_key=routing_key,
                 body=data,
                 properties=pika.BasicProperties(expiration='1000')
             )
+            LOG.info(f"Sent response to queue {routing_key}: {response}")
             channel.basic_ack(method.delivery_tag)
         except Exception as e:
             LOG.exception(f"message_id={message_id}: {e}")