I have a situation, where I need to send the audience as `String` instead of `List<String>`. How can I do it, can you please share some workaround? ``` var claimSet = JwtClaim( issuer: issuer, subject: '', audience: [issuer], otherClaims: {'DATA': encodedPayload}, maxAge: Duration(days: kReleaseMode ? 1 : 7), ); claimSet.audience = issuer; // Giving error - 'audience' can't be used as a setter because it's final. ``` I tried to update the `audience` key but IDE itself giving an error.