my $myObjs = {
    alpha => re('^alpha(.*)'),
    beta => re('\d+'),
    #myOptionalField => re('^opt(.*)'),  #sometimes there is a "myOptionalField", but sometimes there is not. What to do?
  };
  
  cmp_deeply(
    $response,
    {
      field1 => re('\d+'),
      field2 => 2,
      field3 => 1,
      objects => array_each($myObjs)
    },
    'testing for valid response structure'
  );