Create attribute

curl --request POST \
  --url https://api.heyy.io/api/v2.0/attributes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "description": "<string>",
  "externalId": "<string>",
  "isVisibleQuickEdit": true,
  "isVisibleContactsTable": true,
  "isVisibleContactCreate": true
}'

{
  "data": {
    "id": "<string>",
    "name": "<string>",
    "type": "<string>",
    "externalId": "<string>",
    "isVisibleQuickEdit": true,
    "isVisibleContactsTable": true,
    "isVisibleContactCreate": true,
    "description": "<string>",
    "createdAt": "<string>",
    "updatedAt": "<string>"
  }
}