curl --request POST \
  --url https://{gatewayBaseURL}/images/variations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form 'model=<string>' \
  --form 'image=<string>' \
  --form n=123 \
  --form 'response_format=<string>' \
  --form 'size=<string>' \
  --form 'user=<string>'

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