Weird characters in body after request response
Most likely the data you're seeing is compressed (with gzip) since you are sending a header that says you are willing to accept such a response. Set gzip: true in your request() options and request should automatically decompress the body passed to your callback.
Or just remove the 'accept-encoding': 'gzip, deflate, br' line in your headers object to not request gzip compression.
Removing "Accept-Encoding": "gzip,deflate" from header worked for me.