curl --request POST \
  --url https://api.gospott.com/candidates/{id}/contact-identifiers \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "identifier": "<string>",
  "isPrimary": true
}
'

{
  "status": 0,
  "message": "<string>",
  "requestId": "<string>",
  "errors": [
    {
      "code": "REQUIRED",
      "path": "<string>",
      "message": "<string>",
      "received": "<unknown>"
    }
  ]
}