{
"printer": <printername>,
"filename": <filename.pdf>, // Optional
"data" : <PDF file encoded as Base64>
}
{
"printer": "Brother MFC-L2700DW">,
"filename": "18487_163_cutsheet.pdf", // Optional
"data" : "JVBERi0xLjMKJd/++LIKMS...3MTgKJSVFT0YK"
}