curl --request POST \
  --url http://localhost:8080/menu-layout/preview \
  --header 'Content-Type: application/json' \
  --data '
{
  "language": "ru",
  "is_admin": false,
  "is_moderator": false,
  "has_active_subscription": false,
  "subscription_is_active": false,
  "balance_kopeks": 0
}
'

{
  "rows": [
    {
      "buttons": [
        {
          "text": "<string>",
          "action": "<string>",
          "type": "builtin"
        }
      ]
    }
  ],
  "total_buttons": 123
}