Ví dụ ntn: http://data:image/jpeg;base64,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'Chủ đề cấm tại BNS''Chủ đề cấm tại BNS'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'Chủ đề cấm tại BNS''Chủ đề cấm tại BNS'nlctsGly2LDxs+mF6Xp6lD4aoQ88pdfqcR'Chủ đề cấm tại BNS''Chủ đề cấm tại BNS'QSlJ20'Chủ đề cấm tại BNS''Chủ đề cấm tại BNS'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'Chủ đề cấm tại BNS''Chủ đề cấm tại BNS'Tfl7L0RzXDuGV1pKMIxS9EjlIl7vsZIklYssUAAAAAAAAAAAKksgJQgllSoAjJJQJRXJIFgQmSQAAQTkhghsKpNmlqJmxazRuZmkY8mxRE14m5QjMabCiVlEypFZI6IwutBRRkZVmRZGRMxJmSJYMiLlIlygAAAAAAAAAQwBADLEQyGCGVAFQBKZZGNMsmBYkqiQLIEDIEtmObLGOxkGvdI05mzazWl1MVqEEbtJqwRs1skGymVbK8xVyNiZMpkiTK5MjLEyRMUTLEsGSJkRRF0VEgAKAAAAQwGSAAgQwQzSDKtklWABjbARaJZEgLEkgAAABBisIBBrWGu+oBmqvE2KwCKyFWAaFJEIAyMkTNAA0MpZABFgAFAAAKgAAAVlDBAKKsrIAFYmAAj/9k=