curl --request GET \
  --url https://api.atendai.com/api/contacts/{contactId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "name": "<string>",
  "number": "<string>",
  "email": "<string>",
  "profilePicUrl": "<string>",
  "isGroup": true,
  "isAdmin": true,
  "isOpen": true,
  "isBotEnabled": true,
  "utmCampaign": "<string>",
  "utmContent": "<string>",
  "utmMedium": "<string>",
  "utmSource": "<string>",
  "utmTerms": "<string>",
  "active": true,
  "channel": "<string>",
  "whatsappId": "<string>",
  "companyId": "<string>",
  "createdAt": "<string>",
  "updatedAt": "<string>"
}