Can’t decrypt WhatsApp web socket data

I am trying to send serial messages using WhatsApp web socket. However, I can’t communicate with socket in any way. I can’t access incoming json data or outgoing. I couldn’t decipher the password in any way. How can I decrypt this password with Javascript? I only know c# and javascript.

HEX

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Bas64

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Utf 8

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Example base64

AAC4F7TD+aM7mqjEiQNXPIh/ynCD2VEokjoepVP1C1oC31RYbnyPSfVStYwV5wtnuqA1ogQXMUeuSwOPL5sBHB5BB1SEN+ELiisZVVndoxT0P10YpHVR9K2D9KCyzzRKVaWxQ8ba2pRqJ6gBwzeK94a3XnrxmnXh5vlMUxZRUaHmyR8gnLNji66OeTz7fcljA0YbH4aaBskZeXmuWvfKV2bQlaH8Wpam6NvQS/RkXwO68diYkLH/2cRQpg==