Deepgram transcriber with smart formatting

How can I add parameters to the Deepgram transcriber?
for example, my pre-vapi-integrated app uses the following url for transcription:

wss://api.deepgram.com/v1/listen?model=nova-2-${deepgram_model}&punctuate=true&smart_format=true&filler_words=true`

how can i add these additional params via vapi api? i only see model, language and keywords as options
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