ModifyGroupEmployeesCommand

{
    "groupId": "eb54e96e-21b8-4f54-9cd4-80fccbd06f55",
    "add": [
        {
            "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
            "type": "string"
        }
    ],
    "remove": [
        null
    ]
}