using RestSharp;


var options = new RestClientOptions("https://api.sandbox.{id}.gr4vy.app/payment-options");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("Authorization", "Bearer <token>");
request.AddJsonBody("{}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

{
  "items": [
    {
      "type": "payment-option",
      "method": "card",
      "icon_url": "https://cdn.gr4vy.app/card.svg",
      "mode": "card",
      "label": "Pay by Card",
      "can_store_payment_method": true,
      "can_delay_capture": true,
      "context": {
        "gateway": "<string>",
        "gateway_merchant_id": "<string>",
        "merchant_name": "<string>",
        "supported_schemes": [
          "<string>"
        ],
        "approval_ui": {
          "height": "300px",
          "width": "300px"
        },
        "required_fields": {
          "first_name": true,
          "last_name": true,
          "email_address": true,
          "phone_number": true,
          "address": {
            "city": true,
            "country": true,
            "postal_code": true,
            "state": true,
            "house_number_or_name": true,
            "line1": true
          },
          "tax_id": true
        }
      }
    }
  ]
}