gistfile1.txt

//задаю все значения

let merchantId = 191238281216
let timestamp: String = "2015-06-22T16:10:08"
let merchantKeyForMD5 = "6d306b6375724d664e556b4774397070626752354434753955617c"

let sign = Signature(urlToSign: "https://wl.walletone.com/w1/invoicingapi/invoices/",
                    jsonString: "{\"MerchantUserId\":191238281216,\"Amount\":2.91,\"CurrencyId\":643,\"PaymentTypeId\":\"YandexMoneyRUB\",\"OrderId\":\"GQYOE-MJNPO-49623\"}",
                    merchantKey: "6d306b6375724d664e556b4774397070626752354434753955617c",
                    signatureAlgorithm: .MD5)

signature: XYHFxCD26vD+/VfYvOToRA==