baptx

/*
Instagram API: send direct messages from a web browser

Since April 2020, Instagram has a web version to send and read direct messages so my Instagram scripts are not longer needed and I would not recommend using them unless you really need it, to avoid being banned
(never happened to me with Instagram but WhatsApp is owned by Facebook also and they did it to users registering from an unofficial app like yowsup: https://github.com/tgalal/yowsup/commit/88b8ad9581fa22dac330ee3a05fec4e485dfa634#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5)

For browser setup, see script instagram-api_direct_messages_backup.js
Instagram web version sessionid cookie does not allow sending messages so we need to log in manually

Signature should match signed_body data (using HMAC-SHA256 with private key) but wrong signature or key may work also.