How to fix characters when decoding base64 string?

Question

Character encoding

i have encoded string:

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

if I try to decrypt it through services like https://www.base64decode.org/ , then in general the parsing passes, but unreadable characters appear, informational garbage, the json itself is incorrect, how to decrypt it correctly?

Answer 1

as it turned out, this line has extra characters, added on purpose so that the parsing does not work correctly, after cleaning, the correct string is obtained and the decryption is successful

Answer 2

Perhaps this encoding is not base64, but some other? Where did she even come from?

Answer 3

Add one, two, or three characters = (equal sign) to the end of the line