curl --request POST \
  --url https://open.beatpass.ca/api/v1/messaging/conversations/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "message_text": "<string>",
  "user_id": 123,
  "user_ids": [
    123
  ],
  "title": "<string>"
}
'