websocket & change broker decimal to int

apps/product/models.py

@@ -450,7 +450,7 @@ class QuotaBrokerValue(BaseModel):
         on_delete=models.CASCADE,
         related_name='values'
     )
-    value = models.DecimalField(max_digits=12, decimal_places=2)
+    value = models.PositiveBigIntegerField(default=0)
 
     def __str__(self):
         return f"Quota ({self.quota.id}) for Broker({self.broker.organization.name})"