curl --request POST \
  --url https://connvo-dev.convex.cloud/api/run/meetings/lifecycle/updateParticipantRole \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "args": {
    "meetingId": "meeting_123example",
    "userId": "user_456example",
    "newRole": "host"
  }
}'

{
  "status": "success",
  "errorMessage": "",
  "errorData": {},
  "value": null
}