diff --git a/server/oceandbs/views.py b/server/oceandbs/views.py
index 051b6f2..4bd7e19 100644
--- a/server/oceandbs/views.py
+++ b/server/oceandbs/views.py
@@ -714,8 +714,8 @@ def get(self, request):
                 'page': page,
                 'pageSize': pageSize,
                 'userAddress': userAddress,
-                'nonce': params['nonce'],
-                'signature': params['signature'],
+                'nonce': params['nonce'][0],
+                'signature': params['signature'][0],
             }
             absolute_url = urljoin(storage.url, f'getHistory?{urlencode(query_params)}')
             response = requests.get(absolute_url)