Retrieve a ForwardingRequest 

{
  "id": "fwdreq_123",
  "object": "forwarding.request",
  "created": 1234567890,
  "livemode": false,
  "payment_method": "pm_456",
  "request_details": {
    "body": "{\"amount\":{\"value\":1000,\"currency\":\"usd\"},\"paymentMethod\":{\"number\":\"424242******4242\",\"expiryMonth\":\"03\",\"expiryYear\":\"2030\",\"cvc\":\"***\",\"holderName\":\"First Last\"},\"reference\":\"{{REFERENCE_ID}}\"}",
    "headers": [
      {
        "name": "Destination-API-Key",
        "value": "{{DESTINATION_API_KEY}}"
      },
      {
        "name": "Destination-Idempotency-Key",
        "value": "{{DESTINATION_IDEMPOTENCY_KEY}}"
      },
      {
        "name": "Content-Type",
        "value": "application/json"
      }
    ],
    "http_method": "POST"
  },
  "request_context": {
    "destination_ip_address": "35.190.113.80",
    "destination_duration": 234
  },
  "response_details": {
    "body": "{\"transactionId\":\"example1234\"}",
    "headers": [
      {
        "name": "Content-Type",
        "value": "application/json;charset=UTF-8"
      }
    ],
    "status": 200
  },
  "url": "https://endpoint-url/v1/payments",
  "replacements": [
    "card_number",
    "card_expiry",
    "card_cvc",
    "cardholder_name"
  ]
}