Here is 1 saying encoded using a letter for letter replacement:
6

HW HI TOWQK WGQ EUIQ WGUW WGQ DUK VGT EUK'W WQAA U AHQ WGHKYI GQ HI WGQ MQIW
RSNFQ TO TKQ.
-- DUXY WVUHK, "ZSNN'KGQUN VHAITK'I EUAQKNUX"