curl --request POST \
  --url https://api.example.com/fleets/{fleet}/gateways \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "target_port": 123
}
'

{
  "fleet_id": "<string>",
  "id": "<string>",
  "name": "<string>",
  "namespace": "<string>",
  "protocol": "<string>",
  "target_port": 123
}