curl --request POST \
  --url https://api.highwayapi.ai/v4beta/txt2speech \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "text": "<string>",
  "temperature": 123,
  "top_p": 123,
  "references": {
    "text": "<string>"
  },
  "reference_id": {},
  "prosody": {
    "speed": 123,
    "volume": 123
  },
  "chunk_length": 123,
  "normalize": true,
  "format": {},
  "sample_rate": {},
  "mp3_bitrate": {},
  "opus_bitrate": {},
  "latency": {}
}
'