curl --request POST \
  --url http://localhost:8080/promo-offers/broadcast \
  --header 'Content-Type: application/json' \
  --data '
{
  "notification_type": "<string>",
  "valid_hours": 2,
  "user_id": 2,
  "telegram_id": 2,
  "discount_percent": 0,
  "bonus_amount_kopeks": 0,
  "subscription_id": 123,
  "effect_type": "percent_discount",
  "extra_data": {},
  "target": "<string>"
}
'

{
  "created_offers": 123,
  "user_ids": [
    123
  ],
  "target": "<string>"
}