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<?xml version='1.0' encoding='UTF-8'?> <me:env xmlns:me='http://salmon-protocol.org/ns/magic-env'> <me:data type='application/atom+xml'> $data </me:data> <me:encoding>$encoding</me:encoding> <me:alg>$algorithm</me:/alg> <me:sig keyash="$keyhash">$signature</me:sig> </me:env>