fix entities error

entities/entity.py

@@ -1,9 +1,10 @@
-from dataclasses import dataclass
+
+from dataclasses import dataclass, field
 import logging
 
 @dataclass
 class Entity:
-    data: dict = {}
+    data: dict = field(default_factory=dict)
 
     def create(self, key: str, value: any):
         if not isinstance(key, str) or value is None: