curl --request POST \
  --url https://www.anyfast.ai/v1/images/edits \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form model=flux-1-kontext-pro \
  --form image='@example-file' \
  --form 'prompt=Change the background to a sunset beach' \
  --form n=1 \
  --form 'size=<string>'

{
  "created": 1774002799,
  "data": [
    {
      "b64_json": "<string>"
    }
  ]
}