use MazimezGigapayInvoice;
//#1: updating values using separate methods
$invoice = Invoice::findById('4bb6bd41-643e-43fe-af09-206c755088c9');
$invoice = $invoice->updateId("123"); //updating id
$invoice =$invoice->updateMetaDate(json_encode([
"data" => "data from your system" //updating metadata
]));
//#2 updating values using save() methods
$invoice->metadata = json_encode([
"data" => "data from your system" //updating metadata
]);
$invoice->save();