curl --request POST \
  --url https://api.heyy.io/api/v2.0/{channelId}/broadcasts/{broadcastId}/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "mediaId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "data": {
    "id": "<string>",
    "status": "<string>"
  }
}