curl --request DELETE \
  --url https://ts.playservices.tech/api/api/tournaments/{tournamentId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "<string>"
}
'

{
  "cancelled": true,
  "reason": "<string>",
  "refunds": {
    "totalRefunded": 123,
    "playersRefunded": 123
  }
}