signingUtilities.js

    const certificates = parseCertificates(signatureBase64);

    // Add first certificate in the chain
    certificateChain.push(certificates[0]);

    // Go through all certificates to build a chain from first certificate to the root
    certificates.forEach(certificate => {
      if (certificateChain[0].issuer.commonName === certificate.subject.commonName) {
        certificateChain.unshift(certificate);
      }
    });
  } catch (e) {
    console.warn("Error getting certificate data", e);
  }

  return certificateChain;
};