How about typing them in a way supported by your OS:
For example in Linux X11 system you can either (copying instructions from Wikipedia):
Hold Ctrl+Shift and type u followed by the hex digits. Then release Ctrl+Shift.
Press Ctrl+Shift+u, release, then type the hex digits, and press Enter (or ...
Identity scopes are for the "Sign-in with Slack" OAuth process only. Their only purpose is to facilitate authentication of Slack users in a 3rd party web app. It's not meant for requesting API scopes and tokens.
If you want a token with API scopes you need to run the "Add Slack" OAuth process, which basically installs your Slack app into a workspace with ...