What's glaringly obvious is that it could be more maintainable. Breaking it into separate parts could help.

my $timestamp = qr/[A-Z][a-z]+\s+\d+\s+\d+\:\d+\:\d+/;
my $address   = qr/[\.\d]+/;
my $id        = qr/\d+/;
my $timezone  = qr/[A-Z]+:/;
# and so on
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