Yes, I got a syntax error in my frontend which is now resolved. I am very Thankful for your time. Can you help me in WebSocket as I am able to connect with websocket and also getting the heartbeats but I am not able to subscribe any stock and not getting any response when I am sending the data through websocket. The data is this, { "correlationID": "abcde12345", "action": 1, "params": { "mode": 1, "tokenList": [ { "exchangeType": 1, "tokens": [ "10626", "5290" ] }, { "exchangeType": 5, "tokens": [ "234230", "234235", "234219" ] } ] } } And I am getting a binary data only and nothing else from websocket. Can you help me how to use websocket!