Zoho REST API Create document issue

Zoho REST API Create document issue

Is it possible to use api/v1/requests endpoint to create a PDF file by sending the PDF as an encoded blob data or any other string format?

https://www.zoho.com/deluge/help/sign/create-document.html

I'm trying to send the PDF data to Zoho Sign endpoint to create the mentioned PDF on Zoho Sign Side.