GroupAnnouncementResponse

{
    "id": "gpos_71a7ff59-112c-4e78-a990-c7cc650776e5",
    "groupId": "grp_71a7ff59-112c-4e78-a990-c7cc650776e5",
    "authorId": "usr_c1644b5b-3ca4-45b4-97c6-a2a0de70d469",
    "imageId": "file_ce35d830-e20a-4df0-a6d4-5aaef4508044",
    "title": "string",
    "text": "string",
    "imageUrl": "string",
    "createdAt": "2019-08-24T14:15:22.123Z",
    "updatedAt": "2019-08-24T14:15:22.123Z"
}