Authorization: Bearer ********************curl --location 'https://witlark.com/kling/v1/audio/text-to-audio' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"prompt": "string",
"duration": "string",
"external_task_id": "string",
"callback_url": "string"
}'{}