{
"$schema": "http://json-schema.org/draft-07/schema", "definitions": { "url_verification": { "type": "object", "description": "learn more: https://api.slack.com/events/url_verification", "properties": { "challenge": { "type": "string" }, "token": { "type": "string" }, "type": { "const": "url_verification" } }, "example": { "challenge": "3eZbrw1aBm2rZgRNFdxV2595E9CY3gmdALWMmHkvFXO7tYXAYM8P", "token": "Jhj5dZrVaK7ZwHHjRyZWjbDl", "type": "url_verification" } } }
}