curl --request POST \
  --url https://xxx.wengaocloud.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gpt-image-2",
  "prompt": "一张极简风格的云端工作站插画"
}
'

{
  "created": 123,
  "data": [
    {
      "url": "<string>",
      "b64_json": "<string>"
    }
  ]
}