curl --request POST \
  --url https://api.shoppex.io/dev/v1/invoices/{uniqid}/replacements \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "full": "true",
  "quantity": 2,
  "product_id": "<string>"
}
'

{
  "data": {
    "id": "<string>",
    "invoice_id": "<string>",
    "product_id": "<string>",
    "quantity": 123,
    "message": "<string>",
    "created_at": 123
  }
}