curl --request POST \
  --url https://api.hubapi.com/events/2026-03/send/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "inputs": [
    {
      "eventName": "<string>",
      "properties": {},
      "email": "<string>",
      "objectId": "<string>",
      "occurredAt": "2023-11-07T05:31:56Z",
      "utk": "<string>",
      "uuid": "<string>"
    }
  ]
}
'

This response has no body data.