The decode base64 to byte[] service decodes the base64 string. The byte array is then converted into the string 'Hello world'.
SGVsbG8gd29ybGQ=
org.embl.ebi.escience.scuflworkers.java.DecodeBase64
org.embl.ebi.escience.scuflworkers.java.ByteArrayToString
application/octet-stream