it could be a key for an encrypted insurance file

found this old news from 2013
http://qz.com/97885/how-edward-snowdens-encrypted-insurance-file-might-work/
and this image of another tweet he made some days ago
it says "Did you work with me? Have we talked since 2013? Please recontact me securely, or talk to batongellman. It´s time."
https://imgur.com/a/11Hex#pjoFu1h