curl --request POST \
  --url https://api.sinancode.com/v1/generate/k/grok-image-to-video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "image_urls": [
    ""
  ],
  "mode": "normal",
  "prompt": "The person waves and smiles"
}
'

{
  "task_id": "01234567-89ab-cdef-0123-456789abcdef"
}