Return list of payment systems available for user.

required subuser rights: payment_create

return:

{
    "success": true,
    "list": [${payment_system_settings}, ...]
}

where payment_system_settings is:

{
    "type": "rbkmoney", // payment system type
    "url": "https:_rbkmoney.com/acceptpurchase.aspx", // URL to send payment info,
    "account": ${string}, // (optional) dealer account in payment system (eshopId for RBK)
    "currency": "EUR", // 3-letter ISO 4217 currency code 
    "payment_code": "Navixy Demo", // (optional) code for payments
    "subscription_code": "4671292", // (string) subscription code. same as "payment_code" for 2Checkout (formerly Avangate) but for subscriptions
    "methods": [${string}, ...] // (optional) list of available payment methods (may be empty)
    // for type == "ios_inapp" only:
    "prices": {
        "Loccate_default_pay_1": 0.99,
        "Loccate_default_pay_5": 4.99,
        "Loccate_default_pay_10": 9.99,
        "Loccate_default_pay_20": 19.99
    }
}

errors:

• 201 – Not found in database.