curl --request POST \
  --url https://castar.world/openapi/v2/aigc/video/kling-v2.6-pro/create \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "model": "kling-v2.6-pro",
  "prompt": "<string>",
  "duration": 123,
  "feature": {
    "generationType": "Text2Video",
    "aspectRatio": "16:9",
    "generateAudio": true
  },
  "negativePrompt": ""
}
'

{
  "id": "<string>"
}