Like caching the last message from each user/group chat to easily build the user list in the DM tab without loading any actual messages. nostr:nevent1qqsytppyu2my7qcz9pk5wm0yp372rchef6sacep39u37j00u42h8vpqpzemhxue69uhkummnw3ex2mrfw3jhxtn0wfnj7q3qgcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqxpqqqqqqzlg2m6x