lib/Webhooks.js
function(payload, header, secret, tolerance) {
    this.signature.verifyHeader(payload, header, secret, tolerance || Webhook.DEFAULT_TOLERANCE);

    var jsonPayload = JSON.parse(payload);
    return jsonPayload;
  }
function(payload, header, secret, tolerance) {
    this.signature.verifyHeader(payload, header, secret, tolerance || Webhook.DEFAULT_TOLERANCE);

    var jsonPayload = JSON.parse(payload);
    return jsonPayload;
  }
5 minutes