diff --git a/pyinjective/composer.py b/pyinjective/composer.py
index f613e0c8..41140aea 100644
--- a/pyinjective/composer.py
+++ b/pyinjective/composer.py
@@ -1,3 +1,4 @@
+import json
 from configparser import ConfigParser
 from decimal import Decimal
 from time import time
@@ -979,14 +980,14 @@ def UnpackTransactionMessages(transaction):
         meta_messages = json.loads(transaction.messages.decode())
 
         header_map = {
-            "/injective.exchange.v1beta1.MsgCreateSpotLimitOrder": injective_exchange_tx_pb.MsgCreateSpotLimitOrderResponse,
-            "/injective.exchange.v1beta1.MsgCreateSpotMarketOrder": injective_exchange_tx_pb.MsgCreateSpotMarketOrderResponse,
-            "/injective.exchange.v1beta1.MsgCreateDerivativeLimitOrder": injective_exchange_tx_pb.MsgCreateDerivativeLimitOrderResponse,
-            "/injective.exchange.v1beta1.MsgCreateDerivativeMarketOrder": injective_exchange_tx_pb.MsgCreateDerivativeMarketOrderResponse,
-            "/injective.exchange.v1beta1.MsgCancelSpotOrder": injective_exchange_tx_pb.MsgCancelSpotOrderResponse,
-            "/injective.exchange.v1beta1.MsgCancelDerivativeOrder": injective_exchange_tx_pb.MsgCancelDerivativeOrderResponse,
-            "/injective.exchange.v1beta1.MsgBatchCancelSpotOrders": injective_exchange_tx_pb.MsgBatchCancelSpotOrdersResponse,
-            "/injective.exchange.v1beta1.MsgBatchCancelDerivativeOrders": injective_exchange_tx_pb.MsgBatchCancelDerivativeOrdersResponse,
+            "/injective.exchange.v1beta1.MsgCreateSpotLimitOrder": injective_exchange_tx_pb.MsgCreateSpotLimitOrder,
+            "/injective.exchange.v1beta1.MsgCreateSpotMarketOrder": injective_exchange_tx_pb.MsgCreateSpotMarketOrder,
+            "/injective.exchange.v1beta1.MsgCreateDerivativeLimitOrder": injective_exchange_tx_pb.MsgCreateDerivativeLimitOrder,
+            "/injective.exchange.v1beta1.MsgCreateDerivativeMarketOrder": injective_exchange_tx_pb.MsgCreateDerivativeMarketOrder,
+            "/injective.exchange.v1beta1.MsgCancelSpotOrder": injective_exchange_tx_pb.MsgCancelSpotOrder,
+            "/injective.exchange.v1beta1.MsgCancelDerivativeOrder": injective_exchange_tx_pb.MsgCancelDerivativeOrder,
+            "/injective.exchange.v1beta1.MsgBatchCancelSpotOrders": injective_exchange_tx_pb.MsgBatchCancelSpotOrders,
+            "/injective.exchange.v1beta1.MsgBatchCancelDerivativeOrders": injective_exchange_tx_pb.MsgBatchCancelDerivativeOrders,
             "/injective.exchange.v1beta1.MsgBatchCreateSpotLimitOrders": injective_exchange_tx_pb.MsgBatchCreateSpotLimitOrders,
             "/injective.exchange.v1beta1.MsgBatchCreateDerivativeLimitOrders": injective_exchange_tx_pb.MsgBatchCreateDerivativeLimitOrders,
             "/injective.exchange.v1beta1.MsgBatchUpdateOrders": injective_exchange_tx_pb.MsgBatchUpdateOrders,