{
  "$jsonSchema": {
    "bsonType": "object",
    "required": ["name", "password", "email", "role"],
    "properties": {
      "name": {
        "bsonType": "string",
        "minLength": 3,
        "maxLength": 16
      },
      "password": {
        "bsonType": "string"
      },
      "email": {
        "bsonType": "string"
      },
      "role": {
        "bsonType": "string"
      }
    }
  }
}