curl --request POST \
  --url https://api.hubapi.com/events/v3/event-definitions/{eventName}/property \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "options": [
    {
      "hidden": true,
      "displayOrder": 123,
      "description": "<string>",
      "label": "<string>",
      "value": "<string>"
    }
  ],
  "description": "<string>",
  "label": "<string>",
  "type": "<string>"
}'

{
  "hidden": false,
  "displayOrder": 123,
  "description": "",
  "showCurrencySymbol": false,
  "type": "",
  "hubspotDefined": false,
  "createdAt": "2023-11-07T05:31:56Z",
  "archived": false,
  "options": "",
  "hasUniqueValue": false,
  "calculated": false,
  "externalOptions": false,
  "updatedAt": "2023-11-07T05:31:56Z",
  "createdUserId": "",
  "modificationMetadata": {
    "readOnlyOptions": true,
    "readOnlyValue": true,
    "readOnlyDefinition": true,
    "archivable": true
  },
  "sensitiveDataCategories": "",
  "label": "",
  "formField": false,
  "dataSensitivity": "",
  "archivedAt": "2023-11-07T05:31:56Z",
  "groupName": "",
  "referencedObjectType": "",
  "name": "",
  "calculationFormula": "",
  "fieldType": "",
  "updatedUserId": "<string>"
}