{
    "version": "2017-02-28",
    "operation": "PutItem",
    "key": {
        "pk": { "S": "$util.autoId()"}
    },
    "attributeValues": {
        "name": { "S": "$context.arguments.name" },
        "where": { "S": "$context.arguments.where" },
        "when": { "S": "$context.arguments.when" },
        "description": { "S": "$context.arguments.description" }
    }
}