I have converted it to the JSON format for convenience.
{
"cps_email": "dfediuk@gmail.com",
"cps_phone": "79629197348",
"customerNumber": "dfediuk@gmail.com",
"orderNumber": "L916-ORD-2017/10-01141",
"paymentType": "AC",
"scid": 61634,
"shopDefaultUrl": "https://mage2.pro/sandbox/dfe-yandex-kassa/customerReturn",
"shopFailUrl": "https://mage2.pro/sandbox/dfe-yandex-kassa/customerReturn",
"shopId": "38165",
"shopSuccessUrl": "https://mage2.pro/sandbox/dfe-yandex-kassa/customerReturn",
"sum": "8940.00",
"ym_merchant_receipt": {
"customerContact": "dfediuk@gmail.com",
"items": [
{
"price": {"amount": "2033.90"},
"quantity": 2,
"tax": 4,
"text": "Alligator Briefcase"
},
{
"price": {"amount": "2542.37"},
"quantity": 1,
"tax": 4,
"text": "New Very Prive-41-Black"
},
{
"price": {"amount": "1036.36"},
"quantity": 1,
"tax": 3,
"text": "Доставка"
}
]
}
}