neutron-lib/api-ref/source/v2/samples/port_forwardings/port-fowarding-create-response.json

{
  "port_forwarding": {
    "protocol": "tcp",
    "internal_ip_address": "10.0.0.11",
    "internal_port": 25,
    "internal_port_id": "1238be08-a2a8-4b8d-addf-fb5e2250e480",
    "external_port": 2230,
    "id": "725ade3c-9760-4880-8080-8fc2dbab9acc"
  }
}