curl --request PATCH \
  --url https://app.plugchoice.com/api/v3/sites/{site}/chargers/{charger}/reassign \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "site_group_id": 123
}
'

{
  "message": "<string>"
}