diff --git a/app/models/signalr.py b/app/models/signalr.py
index 202da4f..9e189e9 100644
--- a/app/models/signalr.py
+++ b/app/models/signalr.py
@@ -15,26 +15,26 @@ from pydantic import (
 )
 
 
+def serialize_msgpack(v: Any) -> Any:
+    typ = v.__class__
+    if issubclass(typ, BaseModel):
+        return serialize_to_list(v)
+    elif issubclass(typ, list):
+        return TypeAdapter(
+            typ, config=ConfigDict(arbitrary_types_allowed=True)
+        ).dump_python(v)
+    elif issubclass(typ, datetime.datetime):
+        return [v, 0]
+    elif issubclass(typ, Enum):
+        list_ = list(typ)
+        return list_.index(v) if v in list_ else v.value
+    return v
+
+
 def serialize_to_list(value: BaseModel) -> list[Any]:
     data = []
     for field, info in value.__class__.model_fields.items():
-        v = getattr(value, field)
-        typ = v.__class__
-        if issubclass(typ, BaseModel):
-            data.append(serialize_to_list(v))
-        elif issubclass(typ, list):
-            data.append(
-                TypeAdapter(
-                    info.annotation, config=ConfigDict(arbitrary_types_allowed=True)
-                ).dump_python(v)
-            )
-        elif issubclass(typ, datetime.datetime):
-            data.append([v, 0])
-        elif issubclass(typ, Enum):
-            list_ = list(typ)
-            data.append(list_.index(v) if v in list_ else v.value)
-        else:
-            data.append(v)
+        data.append(serialize_msgpack(v=getattr(value, field)))
     return data
 
 
diff --git a/app/signalr/hub/hub.py b/app/signalr/hub/hub.py
index 276140f..a11fbe7 100644
--- a/app/signalr/hub/hub.py
+++ b/app/signalr/hub/hub.py
@@ -2,12 +2,14 @@ from __future__ import annotations
 
 from abc import abstractmethod
 import asyncio
+from enum import Enum
+import inspect
 import time
 from typing import Any
 
 from app.config import settings
 from app.log import logger
-from app.models.signalr import UserState
+from app.models.signalr import UserState, _by_index
 from app.signalr.exception import InvokeException
 from app.signalr.packet import (
     ClosePacket,
@@ -265,6 +267,10 @@ class Hub[TState: UserState]:
                 continue
             if issubclass(param.annotation, BaseModel):
                 call_params.append(param.annotation.model_validate(args.pop(0)))
+            elif inspect.isclass(param.annotation) and issubclass(
+                param.annotation, Enum
+            ):
+                call_params.append(_by_index(args.pop(0), param.annotation))
             else:
                 call_params.append(args.pop(0))
         return await method_(client, *call_params)
diff --git a/app/signalr/packet.py b/app/signalr/packet.py
index 387231c..de5ce8a 100644
--- a/app/signalr/packet.py
+++ b/app/signalr/packet.py
@@ -8,6 +8,8 @@ from typing import (
     Protocol as TypingProtocol,
 )
 
+from app.models.signalr import serialize_msgpack
+
 import msgpack_lazer_api as m
 
 SEP = b"\x1e"
@@ -151,7 +153,7 @@ class MsgpackProtocol:
                 ]
             )
             if packet.arguments is not None:
-                payload.append(packet.arguments)
+                payload.append([serialize_msgpack(arg) for arg in packet.arguments])
             if packet.stream_ids is not None:
                 payload.append(packet.stream_ids)
         elif isinstance(packet, CompletionPacket):