json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Policy",
      "description": "document containing permission statements",
      "type": "object",
      "properties": {
          "statements": {
              "type": "array",
              "items": {
                  "type": "object",
                  "properties": {
                      "effect": {
                          "type": "string",
                          "pattern": "^allow|deny$"
                      },
                      "actions": {
                          "type": "array",
                          "items": {
                              "type": "string",
                              "pattern": "^[a-z]+:\\w+$"
                          }
                      },
                      "resources": {
                          "type": "array",
                          "items": {
                              "type": "string",
                              "pattern": "^brn:(\\w+):(\\w+):(\\w*):(\\*|[\\w\\-]*\\*?)$"
                          }
                      }
                  },
                  "required": [
                      "effect",
                      "actions",
                      "resources"
                  ],
                  "additionalProperties": false
              }
          }
      },
      "required": [
          "statements"
      ],
      "additionalProperties": false
  }