Transcribe audio

curl --request POST \
  --url http://localhost:3000/api/audio/{agentId}/transcriptions \
  --header 'Content-Type: multipart/form-data' \
  --form userId=3c90c3cc-0d44-4b50-8888-8dd25736052a

{
  "success": true,
  "data": {
    "text": "<string>"
  }
}