curl --request POST 'https://xcompute.us/kling/v1/videos/avatar/image2video' \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"model_name": "kling-v3",
"image_url": "https://example.com/avatar.png",
"sound_file": "https://example.com/speech.mp3"
}'