fix(entity): Refactored to remove padding

[NSSPKrishna]

base64.StdEncoding (default): Adds padding characters (=) during encoding for compatibility with standard base64. It removes padding during decoding. base64.RawStdEncoding: Omits padding characters during encoding and expects the input string to not have any padding during decoding (throws error if present).

[pranav-new-relic]

@NSSPKrishna please take a look at the lint failures