my %auth_params = (
Timestamp => sprintf("%s", DateTime->now()),
Format => 'JSON',
Version => $Version,
SignatureMethod => 'HMAC-SHA1',
SignatureVersio
\%auth_params );
$tx = $self->ua->start($tx);
return $tx->res->json if ($tx->res->headers->content_type || '') =~ /json/;
my $err = $tx->error;
croak "$err->{code} response: $err->{m