Get the list of messages

{
    "collection": {
        "info": {
            "name": "Test Collection",
            "description": "This is a test collection that makes a tiny request to Postman Echo service to get the list of request headers sent by a HTTP client.",
            "_postman_id": "12ece9e1-2abf-4edc-8e34-de66e74114d2",
            "schema": "https://schema.getpostman.com/json/collection/v2.0.0/collection.json",
            "updatedAt": "2022-06-16T20:21:13.000Z",
            "fork": {
                "label": "Test Fork",
                "createdAt": "2022-06-16T19:51:44.069Z",
                "from": "12345678-12ece9e1-2abf-4edc-8e34-de66e74114d2"
            }
        },
        "item": [
            {
                "name": "Test GET Response",
                "id": "82ee981b-e19f-962a-401e-ea34ebfb4848",
                "event": [
                    {
                        "listen": "test",
                        "script": {
                            "id": "7d2334fc-a84a-4c3d-b26c-7529afa4c0ae",
                            "exec": [
                                "pm.test(\"Status code is 200\", function () {",
                                "    pm.response.to.have.status(200);",
                                "});"
                            ],
                            "type": "text/javascript"
                        }
                    }
                ],
                "request": {
                    "url": "https://echo.getpostman.com/headers",
                    "method": "GET",
                    "header": [
                        {
                            "key": "Content-Type",
                            "value": "application/json"
                        }
                    ]
                },
                "response": []
            }
        ]
    }
}