プランをキャンセル

curl --request POST \
  --url https://api.hybridbox.io/v1/public/accounts/{account_id}/billing/cancel-plan \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "cancel_at_period_end": true,
  "cancel_immediately": false
}
'

{
  "status": "<string>",
  "account_status": "<string>",
  "effective_at": "2023-11-07T05:31:56Z",
  "eligible": true,
  "previous_plan_id": "<string>",
  "target_plan_id": "<string>"
}