curl --request GET \
  --url http://api.stuut.ai/v1/call-agents/voices \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "accent": "<string>",
      "age": "<string>",
      "gender": "<string>",
      "preview_audio_url": "<string>",
      "provider": "<string>",
      "voice_id": "<string>",
      "voice_name": "<string>"
    }
  ]
}