curl --request POST \
  --url https://api.perscom.io/{version}/messages/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "resources": [
    {
      "message": "<string>",
      "channels": [
        "broadcast"
      ],
      "recipients": [
        123
      ],
      "repeats": false,
      "send_at": "2023-11-07T05:31:56Z",
      "sent_at": "2023-11-07T05:31:56Z"
    }
  ]
}
'

{
  "data": [
    {
      "message": "<string>",
      "channels": [
        "broadcast"
      ],
      "id": 123,
      "recipients": [
        123
      ],
      "repeats": false,
      "send_at": "2023-11-07T05:31:56Z",
      "sent_at": "2023-11-07T05:31:56Z",
      "label": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ]
}