"customer_id" => $form->{"customer_id_$i"},
"next_dunning_config_id" => $form->{"next_dunning_config_id_$i"},
"email" => $form->{"email_$i"}, } ];
"customer_id" => $form->{"customer_id_$i"},
"next_dunning_config_id" => $form->{"next_dunning_config_id_$i"},
"email" => $form->{"email_$i"}, } ];