curl --request POST \
  --url https://api.cartesia.ai/tts/bytes \
  --header 'Cartesia-Version: <cartesia-version>' \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "model_id": "sonic-3.5",
  "transcript": "<string>",
  "voice": {
    "mode": "id",
    "id": "<string>",
    "__experimental_controls": {
      "speed": 123,
      "emotion": []
    }
  },
  "output_format": {
    "container": "raw",
    "sample_rate": 123,
    "bit_rate": 123
  },
  "duration": 123,
  "speed": "normal"
}
'

"<string>"