pa_message camelCase fixed

app.py

@@ -251,7 +251,7 @@ async def v1_pa_message(request: Request) -> Response:
     # noinspection PyBroadException
     try:
         body = json_loads(await request.text())
-        pa_message = marshmallow_dataclass.class_schema(PAMessage)().load(body)
+        pa_message = PAMessage.get_schema().load(body)
         notification_id = await BOT.send_message(pa_message.conversation_id,
                                                  pa_message.tenant_id,
                                                  pa_message.text,

entities/json/pa_message.py

 """ PA message to send to Teams """
+from dataclasses import dataclass
 from typing import Optional
 
-import marshmallow_dataclass
+from entities.json.camel_case_mixin import CamelCaseMixin
 
-from entities.json.camel_case_schema import CamelCaseSchema
 
-
-@marshmallow_dataclass.dataclass(base_schema=CamelCaseSchema)
-class PAMessage:
+@dataclass
+class PAMessage(CamelCaseMixin):
     """ PA message Schema """
     conversation_id: str
     tenant_id: str