curl --request POST \
  --url http://127.0.0.1:9550/v2/pay_invoice \
  --header 'Content-Type: application/json' \
  --data '
{
  "data_for_tool": "<unknown>",
  "invoice_id": "<string>"
}
'

{
  "code": 1,
  "error": "<string>",
  "message": "<string>"
}