Hi, I am based out of London and had a brokerage account with Karvy which defaulted in 2019. NSE has send an email to submit a 600 Rupee indemnity bond so that funds which were stuck in the pool account of Karvy can be released. They have sent me the content which needs to be put on a stamp paper and send to NSE. Given I am out of India, is there a way this can be done online. I know there are some services called Franking - any guidance on how those can be used and can I do a digital signature and also ask witnesses to do digital signatures given I am in London. Thanks for the help