```sh
curl -X POST https://jimeng-api.kevisual.cn/v1/images/generations \
-H "Content-Type: application/json" \
-H "Authorization: Bearer 4e962fc85078d5bfc02c9882bfe659eb" \
-d '{
  "model": "jimeng-4.0",
  "prompt": "生成一个水墨山水画",
  "ratio": "1:1",
  "resolution": "2k"
}'
```