curl --request POST \
  --url https://castar.world/openapi/v2/aigc/image/nano-banana-pro/create \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "model": "nano-banana-pro",
  "prompt": "<string>",
  "aspectRatio": "1:1",
  "resolution": "Standard",
  "images": [
    "<string>"
  ]
}
'

{
  "id": "<string>"
}