i think you'll have to use the keys function:

print Dumper( keys   %{ $transaction_record_fields_method1->[2] } );
print Dumper( values %{ $transaction_record_fields_method1->[2] } );
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keep in mind keys will return a list, so:

my ($name) = keys %{ $transaction_record_fields_method1->[2] };
my $range  = $transaction_record_fields_method1->[2]->{$name};
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