curl --request POST \
  --url https://app.egma.ai/v1/persona-preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "models": {
    "llm": {
      "provider": "<string>",
      "model": "<string>"
    },
    "stt": {
      "provider": "<string>",
      "model": "<string>"
    },
    "tts": {
      "provider": "<string>",
      "model": "<string>",
      "voiceId": "<string>",
      "speed": 123
    }
  },
  "controls": {
    "language": "<string>",
    "accent": "<string>",
    "speechVolume": 1,
    "backgroundVolume": 0.13351878753778457
  }
}
'

{
  "audioBase64": "<string>",
  "contentType": "<string>",
  "expiresAt": "2023-11-07T05:31:56Z",
  "interruptionNotice": "<string>",
  "voiceAccessProof": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {}
}