curl --request POST \
  --url https://api.hubapi.com/webhooks-journal/subscriptions/2026-03 \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "actions": [],
  "objectIds": [
    123
  ],
  "objectTypeId": "<string>",
  "portalId": 123,
  "properties": [
    "<string>"
  ],
  "subscriptionType": "OBJECT"
}
'

{
  "actions": [],
  "appId": 123,
  "createdAt": "2023-11-07T05:31:56Z",
  "id": 123,
  "objectTypeId": "<string>",
  "updatedAt": "2023-11-07T05:31:56Z",
  "actionOverrides": {},
  "associatedObjectTypeIds": [
    "<string>"
  ],
  "createdBy": 123,
  "deletedAt": "2023-11-07T05:31:56Z",
  "listIds": [
    123
  ],
  "objectIds": [
    123
  ],
  "portalId": 123,
  "properties": [
    "<string>"
  ]
}