curl --location --request POST '/api/billing/projects//orders' \
--header 'Accept-Language;' \
--header 'Content-Type: application/json' \
--data-raw '{
"amount": 500000,
"pay_system_id": "string",
"order_type": "topup",
"tariff_id": "string",
"period": "monthly",
"package_id": "string"
}'{
"order_id": "string",
"payment_url": "https://securepay.tinkoff.ru/...",
"pay_system_name": "T-Bank"
}