curl --request POST \
  --url https://www.jimmyai.cn/api/open-api/v1/images/understand \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "contents": [
    {
      "role": "<string>",
      "parts": [
        {
          "text": "<string>"
        }
      ]
    }
  ]
}
'

{
  "code": "20000",
  "msg": "ok",
  "data": {
    "candidates": [
      {}
    ]
  }
}