%2$@|%1$@ sent a message to the group
Legacy string. It was used for notifications. (the text before | is a header, the text after | is shown on a new line)
24
%2$@|%1$@ sent a message
24/24
Nice Giraffe,
Dec 30, 2018 at 11:25
%2$@|%1$@ sent a message to the group
37/24
Kind Tiger,
Dec 27, 2018 at 16:20