var type: String?
    var user_id: String?
    var createdAt: String?
    var userName: String?
    var userImage: String?
    var activity_comment: String?
    var activity_image: String?
    var activity_original_img: String?
    var claps_count: Int?
    var tagged_products:[Product]?
    var activity_id: String?
    var postType: Int?
    var postDate = Date()