{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "properties": {
        "eventTags": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "key": {
                        "type": "string",
                        "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                    },
                    "value": {
                        "type": "string",
                        "minLength": 1,
                        "maxLength": 255
                    }
                },
                "required": [
                    "key",
                    "value"
                ],
                "additionalProperties": false
            }
        }
    }
}