Payload Formats

import hmac, hashlib

signature = hmac.new(
    client_secret.encode(),
    request_body_bytes,  # raw bytes, not re-serialized
    hashlib.sha256
).hexdigest()
# Set as X-Data-Signature header

const crypto = require('crypto');
const sig = crypto.createHmac('sha256', clientSecret)
  .update(rawBodyBuffer)
  .digest('hex');

{
  "url": "https://api.opencard.io/files/receipts/abc123",
  "content_type": "application/pdf",
  "expiration_time": "2022-10-02 11:12:14",
  "purchase_merchant": "Coop",
  "original_amount": 109.38,
  "original_currency": "SEK",
  "transaction": { "id": "10", "card_issuer": "nordea" },
  "payment_product": {
    "id": 1,
    "name": "Acme Corporate Card"
  }
}