typingwork fraud and demand for legal action

on WhatsApp and after few hours they called me and said that I have to do the data entry job where I will get paid Rs 24,500 (Rs 35 × 700 pages) if I complete the job within 7 days. I asked whether there's any registration fee or not. She said no there is no registration fee at all. Then after few minutes I received an User Id and Password on my WhatsApp from the same given number and she said that my registration in done and now I have to login and start my work. After I completed almost 114 pages (which was very difficult cause it was really very much difficult to understand the letters and type it back, it took more than 9 hours to complete 114 pages out of 700 pages) I just saw my email and there was a spam message from [deleted] where there was pdf of legal contract and a writing that I must take the print out of the pdf file and sign it and send it back to their email. But I haven't signed it and sent it back to them cause I have already started the work and then I found in YouTu