curl --request POST \
  --url https://api.smartlyq.com/v1/audio/text-to-speech \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "text": "<string>",
  "voice": "<string>",
  "model": "<string>"
}
'

{
  "success": true,
  "data": {
    "id": 123,
    "url": "<string>",
    "duration_seconds": 123,
    "created_at": "2023-11-07T05:31:56Z"
  },
  "usage": {
    "units": 123,
    "cost": "<string>",
    "balance_remaining": "<string>"
  },
  "meta": {
    "request_id": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}