curl --request PATCH \
  --url https://api.gcore.com/waap/v1/custom-page-sets/{set_id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "domains": [
    123
  ],
  "block": {
    "enabled": true,
    "logo": "<string>",
    "header": "<string>",
    "title": "<string>",
    "text": "<string>"
  },
  "block_csrf": {
    "enabled": true,
    "logo": "<string>",
    "header": "<string>",
    "title": "<string>",
    "text": "<string>"
  },
  "captcha": {
    "enabled": true,
    "logo": "<string>",
    "header": "<string>",
    "title": "<string>",
    "text": "<string>",
    "error": "<string>"
  },
  "cookie_disabled": {
    "enabled": true,
    "header": "<string>",
    "text": "<string>"
  },
  "handshake": {
    "enabled": true,
    "logo": "<string>",
    "header": "<string>",
    "title": "<string>"
  },
  "javascript_disabled": {
    "enabled": true,
    "header": "<string>",
    "text": "<string>"
  },
  "name": "<string>"
}
'

{
  "type": "http-bad-request",
  "title": "Bad Request",
  "status": 400,
  "detail": "Invalid domain name: ''''"
}