%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$@|%1$@ отправил(а) сообщение
31/24
Eric Kotato,
Dec 30, 2018 at 11:54
%2$@|%1$@ отправил(а) сообщение в группу
40/24
Eric Kotato,
Dec 29, 2018 at 11:10