curl --location --request POST 'https://api.cash-in.com/v2/externalinvoiceaction' \
--header 'X-Api-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '[
{
"InvoiceNumber": 0,
"TargetSystemInvoiceId": 0,
"ActionType": 0,
"ActionComment": "string",
"InvoiceDueDate": "2019-08-24T14:15:22.123Z"
}
]'{
"Message": "string",
"InvoiceActionsCount": 0
}