curl --request POST \
  --url https://api.app.hrizn.io/v1/public/gbp/posts/{id}/reschedule \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "publish_at_utc": "2023-11-07T05:31:56Z",
  "scheduled_timezone": "<string>"
}
'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "status": "scheduled",
    "publish_at_utc": "2023-11-07T05:31:56Z",
    "scheduled_timezone": "<string>"
  }
}