{
	"flowNo": "1734276289299"
}

  Content-Type: multipart/form-data
  cryptoPayload:
  {
    "jsonEnc": Encrypted message body,
    "keyEnc": Encrypted key,
    "sign": Encrypted signature,
    "merchantNo": Merchant number
  }
  file: File stream

JSONObject object = new JSONObject();
object.put("merchantNo", merchantNo);
object.put("jsonEnc", hexJsonEnc);
object.put("keyEnc", hexKeyEnc);
object.put("sign", hexSign);

MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.addPart("cryptoPayload", new StringBody(object.toJSONString(), ContentType.APPLICATION_JSON));
builder.addPart("file", new FileBody(file));

{
	"fileName": "invite/000959100493/260617174313900001.jpg",
	"code": "S00000",
	"message": "File uploaded success."
}