Выставление счета для пополнения баланса пользователя

POST https://adm.tools/action/billing/balance_invoice/

Параметр	Тип данных
currency_id	Int
amount	Float

[{"name":"currency_id","method":"POST","type":"Int","enum":"","default_value":"","is_required":true},{"name":"amount","method":"POST","type":"Float","enum":"","default_value":"0","is_required":false}]