{
  "type": "object",
  "required": [ "access_level_description" ],
  "properties": {
    "access_level": { "type": ["integer", "null"] },
    "access_level_description": { "type": ["string", "null"] },
    "user_id": { "type": ["integer", "null"] },
    "group_id": { "type": ["integer", "null"] }
  },
  "additionalProperties": false
}
