curl --request POST \
  --url https://api.jtl-cloud.com/erp/v1/salesOrders/{salesOrderId}/lineitems/{salesOrderLineItemId}/files \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-tenant-id: <x-tenant-id>' \
  --data '
{
  "FileData": "aSDinaTvuI8gbWludGxpZnk=",
  "FileDataType": "<string>",
  "FileName": "<string>"
}
'

{
  "Id": 123,
  "SalesOrderLineItemId": 123,
  "SalesOrderId": 123,
  "FileId": 123,
  "FileDataType": "<string>",
  "Size": 123,
  "CreatedAt": "2023-11-07T05:31:56Z",
  "FileName": "<string>"
}