How can I create a repeatable signature of a data structure?

I have a situation where I want to create a signature of a data structure:

my $signature = ds_to_sig(
  { foo   => 'bar',
    baz   => 'bundy',
    boing => undef,
    number => 1_234_567,
  }
);

The aim should be that if the data structure changes then so should the signature.

Is there an established way to do this?