curl --request POST \
  --url https://api.example.com/v1/openai/images/variations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form image='@example-file' \
  --form 'model=<string>' \
  --form 'inp={
  "model": "<string>",
  "image": "<string>",
  "n": 1,
  "response_format": "b64_json",
  "size": "1024x1024",
  "user": "<string>"
}' \
  --form inp.0.image='@example-file'

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