curl --request POST \
  --url http://localhost:8080/broadcasts \
  --header 'Content-Type: application/json' \
  --data '
{
  "target": "<string>",
  "message_text": "<string>",
  "selected_buttons": [
    "<string>"
  ],
  "media": {
    "type": "<string>",
    "file_id": "<string>",
    "caption": "<string>"
  }
}
'

{
  "id": 123,
  "target_type": "<string>",
  "message_text": "<string>",
  "has_media": true,
  "total_count": 123,
  "sent_count": 123,
  "failed_count": 123,
  "status": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "media_type": "<string>",
  "media_file_id": "<string>",
  "media_caption": "<string>",
  "blocked_count": 0,
  "admin_id": 123,
  "admin_name": "<string>",
  "completed_at": "2023-11-07T05:31:56Z"
}