diff --git a/trustgraph-base/trustgraph/base/subscriber.py b/trustgraph-base/trustgraph/base/subscriber.py
index 24b7a45c..35ac4d17 100644
--- a/trustgraph-base/trustgraph/base/subscriber.py
+++ b/trustgraph-base/trustgraph/base/subscriber.py
@@ -43,12 +43,18 @@ class Subscriber:
 
     async def start(self):
 
-        self.consumer = self.client.subscribe(
-            topic = self.topic,
-            subscription_name = self.subscription,
-            consumer_name = self.consumer_name,
-            schema = JsonSchema(self.schema),
-        )
+        # Build subscribe arguments
+        subscribe_args = {
+            'topic': self.topic,
+            'subscription_name': self.subscription,
+            'consumer_name': self.consumer_name,
+        }
+
+        # Only add schema if provided (omit if None)
+        if self.schema is not None:
+            subscribe_args['schema'] = JsonSchema(self.schema)
+
+        self.consumer = self.client.subscribe(**subscribe_args)
 
         self.task = asyncio.create_task(self.run())
 
diff --git a/trustgraph-cli/trustgraph/cli/dump_queues.py b/trustgraph-cli/trustgraph/cli/dump_queues.py
index ce057fed..2cbe8c21 100644
--- a/trustgraph-cli/trustgraph/cli/dump_queues.py
+++ b/trustgraph-cli/trustgraph/cli/dump_queues.py
@@ -9,6 +9,7 @@ Uses TrustGraph's Subscriber abstraction for future-proof pub/sub compatibility.
 """
 
 import pulsar
+from pulsar.schema import BytesSchema
 import sys
 import json
 import asyncio
@@ -161,7 +162,7 @@ async def async_main(queues, output_file, pulsar_host, listener_name, subscriber
                 topic=queue_name,
                 subscription=subscriber_name,
                 consumer_name=f"{subscriber_name}-{queue_name}",
-                schema=None,  # Generic - no schema validation
+                schema=None,  # No schema - accept any message type
             )
             await sub.start()
             subscribers.append((queue_name, sub))