curl --request GET \
  --url https://api4.kinbox.com.br/v3/custom-fields \
  --header 'Authorization: Bearer <token>'

{
  "totalCount": 123,
  "data": [
    {
      "id": "<string>",
      "_id": "<string>",
      "name": "<string>",
      "description": "<string>",
      "entity": "<string>",
      "placeholder": "<string>",
      "type": "<string>",
      "options": {},
      "isActive": true,
      "isDeleted": true,
      "invisible": true,
      "position": 123,
      "isUniqueIdentifier": true,
      "isIntegration": true,
      "showAlways": true,
      "requiredToResolve": true,
      "resetOnNewCall": true,
      "validate": {},
      "validation_mask": {},
      "validation_type": "<string>",
      "dependency": {},
      "isDependent": true,
      "workspaceId": 123,
      "createdAt": "2023-11-07T05:31:56Z",
      "lastUpdateAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ]
}