curl --request POST \
  --url https://geoff.ai/api/v1/video/generate/subject \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "subject_image": "base64-subject-image",
    "prompt": "The subject walking through a park on a sunny day",
    "duration": 5
  }'

{
  "data": {
    "task_id": "task_vid_jkl012",
    "status": "processing"
  }
}