curl --request POST \
  --url https://services.pref.rio/rmi/v1/admin/cache/read \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "key": "citizen:12345678901"
}
'

{
  "exists": true,
  "key": "<string>",
  "ttl_seconds": 123,
  "value": "<unknown>"
}