diff --git a/examples/ws-private.ts b/examples/ws-private.ts
index 30fa731..ae55f56 100644
--- a/examples/ws-private.ts
+++ b/examples/ws-private.ts
@@ -13,10 +13,13 @@ import { WebsocketClient, WS_KEY_MAP, DefaultLogger } from '../src';
   const secret = process.env.API_SECRET;
 
   // USDT Perps:
-  const market = 'linear';
+  // const market = 'linear';
   // Inverse Perp
   // const market = 'inverse';
   // const market = 'spotv3';
+  // Contract v3
+  const market = 'contractUSDT';
+  // const market = 'contractInverse';
 
   // Note: the WebsocketClient defaults to testnet. Set `livenet: true` to use live markets.
   const wsClient = new WebsocketClient(
@@ -48,8 +51,19 @@ import { WebsocketClient, WS_KEY_MAP, DefaultLogger } from '../src';
   wsClient.on('reconnected', (data) => {
     console.log('ws has reconnected ', data?.wsKey);
   });
+  wsClient.on('error', (data) => {
+    console.error('ws exception: ', data);
+  });
 
   // subscribe to private endpoints
   // check the api docs in your api category to see the available topics
-  wsClient.subscribe(['position', 'execution', 'order', 'wallet']);
+  // wsClient.subscribe(['position', 'execution', 'order', 'wallet']);
+
+  // Contract v3
+  wsClient.subscribe([
+    'user.position.contractAccount',
+    'user.execution.contractAccount',
+    'user.order.contractAccount',
+    'user.wallet.contractAccount',
+  ]);
 })();
diff --git a/examples/ws-public.ts b/examples/ws-public.ts
index c3b01dd..71362ad 100644
--- a/examples/ws-public.ts
+++ b/examples/ws-public.ts
@@ -51,6 +51,9 @@ import { DefaultLogger, WS_KEY_MAP, WebsocketClient } from '../src';
   wsClient.on('reconnected', (data) => {
     console.log('ws has reconnected ', data?.wsKey);
   });
+  // wsClient.on('error', (data) => {
+  //   console.error('ws exception: ', data);
+  // });
 
   // Inverse
   // wsClient.subscribe('trade');
diff --git a/src/util/websocket-util.ts b/src/util/websocket-util.ts
index fa309f5..520e7c0 100644
--- a/src/util/websocket-util.ts
+++ b/src/util/websocket-util.ts
@@ -221,6 +221,11 @@ const PRIVATE_TOPICS = [
   'user.order.unifiedAccount',
   'user.wallet.unifiedAccount',
   'user.greeks.unifiedAccount',
+  // contract v3
+  'user.position.contractAccount',
+  'user.execution.contractAccount',
+  'user.order.contractAccount',
+  'user.wallet.contractAccount',
 ];
 
 export function getWsKeyForTopic(
diff --git a/test/contract/ws.private.test.ts b/test/contract/ws.private.test.ts
new file mode 100644
index 0000000..162c803
--- /dev/null
+++ b/test/contract/ws.private.test.ts
@@ -0,0 +1,74 @@
+import {
+  WebsocketClient,
+  WSClientConfigurableOptions,
+  WS_KEY_MAP,
+} from '../../src';
+import {
+  logAllEvents,
+  getSilentLogger,
+  waitForSocketEvent,
+  WS_OPEN_EVENT_PARTIAL,
+  fullLogger,
+} from '../ws.util';
+
+describe('Private Contract Websocket Client', () => {
+  const API_KEY = process.env.API_KEY_COM;
+  const API_SECRET = process.env.API_SECRET_COM;
+
+  let wsClient: WebsocketClient;
+
+  const wsClientOptions: WSClientConfigurableOptions = {
+    market: 'contractUSDT',
+    key: API_KEY,
+    secret: API_SECRET,
+  };
+
+  beforeAll(async () => {
+    wsClient = new WebsocketClient(
+      wsClientOptions,
+      getSilentLogger('expectSuccessNoAuth')
+      // fullLogger
+    );
+    // logAllEvents(wsClient);
+    wsClient.connectPrivate();
+  });
+
+  afterAll(() => {
+    wsClient.closeAll(true);
+  });
+
+  it('should open a private ws connection', async () => {
+    const wsOpenPromise = waitForSocketEvent(wsClient, 'open');
+    try {
+      expect(await wsOpenPromise).toMatchObject({
+        event: WS_OPEN_EVENT_PARTIAL,
+        wsKey: WS_KEY_MAP.contractUSDTPrivate,
+      });
+    } catch (e) {
+      expect(e).toBeFalsy();
+    }
+  });
+  it('should authenticate successfully', async () => {
+    const wsResponsePromise = waitForSocketEvent(wsClient, 'response');
+    // const wsUpdatePromise = waitForSocketEvent(wsClient, 'update');
+
+    try {
+      expect(await wsResponsePromise).toMatchObject({
+        op: 'auth',
+        req_id: 'contractUSDTPrivate-auth',
+        success: true,
+        wsKey: WS_KEY_MAP.contractUSDTPrivate,
+      });
+    } catch (e) {
+      // sub failed
+      expect(e).toBeFalsy();
+    }
+
+    // try {
+    //   expect(await wsUpdatePromise).toStrictEqual('');
+    // } catch (e) {
+    //   // no data
+    //   expect(e).toBeFalsy();
+    // }
+  });
+});
diff --git a/test/unified-margin/ws.private.test.ts b/test/unified-margin/ws.private.test.ts
index 313321d..9e738a5 100644
--- a/test/unified-margin/ws.private.test.ts
+++ b/test/unified-margin/ws.private.test.ts
@@ -12,10 +12,15 @@ import {
 } from '../ws.util';
 
 describe('Private Unified Margin Websocket Client', () => {
+  const API_KEY = process.env.API_KEY_COM;
+  const API_SECRET = process.env.API_SECRET_COM;
+
   let wsClient: WebsocketClient;
 
   const wsClientOptions: WSClientConfigurableOptions = {
     market: 'unifiedPerp',
+    key: API_KEY,
+    secret: API_SECRET,
   };
 
   beforeAll(() => {