function toTitleCase(word) {
 if (word === null) {
   return word;
 }
 return word.split(' ')
   .map(w => w.charAt(0).toUpperCase() + w.substring(1).toLowerCase())
   .join(' ');
}

contact = bx24.callMethod('crm.contact.get', {id: contactId});

let newName = toTitleCase(contact.NAME);
let newLastName = toTitleCase(contact.LAST_NAME);
let newMiddleName = toTitleCase(contact.SECOND_NAME);

let updated;
if (contact.NAME !== newName
    || contact.LAST_NAME !== newLastName
    || contact.SECOND_NAME !== newMiddleName) {
  console.log('Обновляем контакт');
  bx24.callMethod('crm.contact.update', {
     id: contactId,
     fields: {
       NAME: newName,
       LAST_NAME: newLastName,
       SECOND_NAME: newMiddleName
     }
  });
  updated = true;
} else {
  console.log('Контакт не требует обновления');
  updated = false;
}

return {"isUpdated": updated};