[Square] A response to `POST /v2/customers/{customer_id}/cards`

The API specification: docs.connect.squareup.com/api/connect/v2#endpoint-createcustomercard

{
    "billing_address": {
        "address_line_1": "78B Avenue Marceau",
        "address_line_2": "",
        "address_line_3": "",
        "administrative_district_level_1": "Paris",
        "administrative_district_level_2": "",
        "administrative_district_level_3": "",
        "country": "FR",
        "locality": "Paris",
        "postal_code": "75008",
        "sublocality": "",
        "sublocality_2": "",
        "sublocality_3": ""
    },
    "card_brand": "VISA",
    "cardholder_name": "DMITRY FEDYUK",
    "exp_month": 7,
    "exp_year": 2021,
    "id": "82e66bb3-36ab-51cd-45e7-f9f251c73b08",
    "last_4": "5858"
}