diff --git a/pyproject.toml b/pyproject.toml
index bcc81ae..e89171b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "resotoclient"
-version = "1.6.0"
+version = "1.6.1"
 description = "Resoto Python client library"
 authors = ["Some Engineering Inc."]
 license = "Apache-2.0"
diff --git a/resotoclient/__init__.py b/resotoclient/__init__.py
index 30deb07..bf5f013 100644
--- a/resotoclient/__init__.py
+++ b/resotoclient/__init__.py
@@ -7,14 +7,12 @@
     Optional,
     List,
     Tuple,
-    Sequence,
     Mapping,
     Type,
     AsyncIterator,
     TypeVar,
     Awaitable,
     Callable,
-    cast,
 )
 from types import TracebackType
 from resotoclient.models import (
@@ -246,7 +244,7 @@ def get_node(self, node_id: str, graph: str = "resoto") -> JsObject:
     def delete_node(self, node_id: str, graph: str = "resoto") -> None:
         return self._await(lambda c: c.delete_node(node_id, graph))
 
-    def patch_nodes(self, nodes: Sequence[JsObject], graph: str = "resoto") -> List[JsObject]:
+    def patch_nodes(self, nodes: List[JsObject], graph: str = "resoto") -> List[JsObject]:
         return self._await(lambda c: c.patch_nodes(nodes, graph))
 
     def merge_graph(self, update: List[JsObject], graph: str = "resoto") -> GraphUpdate:
@@ -404,7 +402,7 @@ def dataframe(self, search: str, section: Optional[str] = "reported", graph: str
 
         def extract_node(node: JsObject) -> Optional[JsObject]:
             node_data = node
-            if not isinstance(node_data, dict):
+            if not node_data:
                 return None
             if aggregate_search:
                 if flatten and "group" in node_data and isinstance(node_data["group"], dict):
@@ -416,7 +414,7 @@ def extract_node(node: JsObject) -> Optional[JsObject]:
                 if flatten:
                     if not "reported" in node or not isinstance(node["reported"], dict):
                         return None
-                    node_data = cast(Dict[str, Any], node["reported"])
+                    node_data = node["reported"]
                     for k, v in node.items():
                         if isinstance(v, dict) and k != "reported":
                             node_data[k] = v
diff --git a/resotoclient/async_client.py b/resotoclient/async_client.py
index 0157a10..67fd46e 100644
--- a/resotoclient/async_client.py
+++ b/resotoclient/async_client.py
@@ -9,7 +9,6 @@
     Optional,
     List,
     Tuple,
-    Sequence,
     Type,
 )
 from types import TracebackType
@@ -223,7 +222,7 @@ async def delete_node(self, node_id: str, graph: str = "resoto") -> None:
         else:
             raise AttributeError(await response.text())
 
-    async def patch_nodes(self, nodes: Sequence[JsObject], graph: str = "resoto") -> List[JsObject]:
+    async def patch_nodes(self, nodes: List[JsObject], graph: str = "resoto") -> List[JsObject]:
         response = await self._patch(
             f"/graph/{graph}/nodes",
             json=nodes,
diff --git a/resotoclient/json_utils.py b/resotoclient/json_utils.py
index b13ddcf..a0124e8 100644
--- a/resotoclient/json_utils.py
+++ b/resotoclient/json_utils.py
@@ -1,6 +1,7 @@
-from typing import Optional, Type, TypeVar, Any
-import jsons
 import json
+from typing import Optional, Type, TypeVar
+
+import jsons
 
 from resotoclient.models import JsValue
 
@@ -29,9 +30,3 @@ def json_dump(
     return jsons.dump(obj, cls)  # type: ignore
 
 
-def __identity(obj: JsValue, *args: Any, **kwargs: Any) -> JsValue:
-    return obj
-
-
-jsons.set_serializer(__identity, JsValue)
-jsons.set_deserializer(__identity, JsValue)
diff --git a/resotoclient/models.py b/resotoclient/models.py
index 40bffad..4f15f30 100644
--- a/resotoclient/models.py
+++ b/resotoclient/models.py
@@ -1,10 +1,10 @@
 from dataclasses import dataclass, field
-from typing import List, Optional, Mapping, Sequence, Union, Dict
 from datetime import timedelta
 from enum import Enum
+from typing import List, Optional, Mapping, Union, Dict, Any
 
-JsValue = Union[None, int, str, float, bool, Sequence["JsValue"], Mapping[str, "JsValue"]]
-JsObject = Mapping[str, JsValue]
+JsValue = Union[None, int, str, float, bool, List[Any], Dict[str, Any]]
+JsObject = Dict[str, JsValue]
 
 
 @dataclass
diff --git a/tests/async_resotoclient_test.py b/tests/async_resotoclient_test.py
index 1def5e6..ee7177a 100644
--- a/tests/async_resotoclient_test.py
+++ b/tests/async_resotoclient_test.py
@@ -39,7 +39,7 @@ async def core_client() -> AsyncIterator[ResotoClient]:
 async def test_listen_to_events(core_client: ResotoClient) -> None:
     received: List[JsObject] = []
     send_queue: Queue[JsObject] = Queue()
-    messages = [dict(kind="event", message_type="test", data={"foo": i}) for i in range(5)]
+    messages: List[JsObject] = [dict(kind="event", message_type="test", data={"foo": i}) for i in range(5)]
     for msg in messages:
         # add some messages that should be ignored - we are only listening for test events
         await send_queue.put(dict(kind="event", message_type="ignore_me"))
diff --git a/tests/model_test.py b/tests/model_test.py
index 6fcc720..7192fac 100644
--- a/tests/model_test.py
+++ b/tests/model_test.py
@@ -1,5 +1,17 @@
+from typing import Any
+
+import jsons
+
 from resotoclient.json_utils import json_dump, json_load
-from resotoclient.models import Property, Kind
+from resotoclient.models import Property, Kind, JsValue
+
+
+def __identity(obj: JsValue, *args: Any, **kwargs: Any) -> JsValue:
+    return obj
+
+
+jsons.set_serializer(__identity, JsValue)  # type: ignore
+jsons.set_deserializer(__identity, JsValue)  # type: ignore
 
 
 def test_prop_js_roundtrip() -> None: