curl --request POST \
--url https://waves-api.smallest.ai/api/v1/lightning/get_speech \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"text": "<string>",
"voice_id": "<string>",
"sample_rate": 24000,
"speed": 1,
"language": "en",
"output_format": "pcm"
}'