curl --request POST \
  --url https://api.example.com/auth/check-email-and-phone-number \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "countryAbbreviation": "<string>",
  "email": "<string>",
  "phoneNumber": "<string>",
  "languageId": 1
}
'

{
  "success": true,
  "data": "<unknown>"
}