/usr/share/perl5/Parse/Method/Signatures/ is in libparse-method-signatures-perl 1.003016-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Parse/Method/Signatures/Param/
/usr/share/perl5/Parse/Method/Signatures/Param.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Bindable.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Named.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Placeholder.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Positional.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Unpacked/
/usr/share/perl5/Parse/Method/Signatures/Param/Unpacked.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Unpacked/Array.pm
/usr/share/perl5/Parse/Method/Signatures/Param/Unpacked/Hash.pm
/usr/share/perl5/Parse/Method/Signatures/ParamCollection.pm
/usr/share/perl5/Parse/Method/Signatures/Sig.pm
/usr/share/perl5/Parse/Method/Signatures/TypeConstraint.pm
/usr/share/perl5/Parse/Method/Signatures/Types.pm