Workflow:

{
    "nodes": [
        {
            "name": "Mock Data",
            "type": "n8n-nodes-base.function",
            "position": [
                802,
                307
            ],
            "parameters": {
                "functionCode": "return [\n  {\n    json: {\n      id: 1,\n      name: \"Jim\"\n    }\n  },\n  {\n    json: {\n      id: 2,\n      name: \"Stefan\"\n    }\n  },\n  {\n    json: {\n      id: 3,\n      name: \"Hans\"\n    }\n  }\n];"
            },
            "typeVersion": 1
        },
        {
            "name": "Create an array of objects",
            "type": "n8n-nodes-base.function",
            "position": [
                1052,
                307
            ],
            "parameters": {
                "functionCode": "return [\n  {\n    json: {\n      data_object: items.map(item => item.json),\n    },\n  }\n];\n"
            },
            "typeVersion": 1
        }
    ],
    "connections": {
        "Mock Data": {
            "main": [
                [
                    {
                        "node": "Create an array of objects",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    }
}