33 bytes?

Header:
04 22 4d 18 64 40 a7 0e  00 00 00

Payload:
 1f	--  1 literal, matchlength 15 means 19+
 00     --  the literal
01 00  -- offset (1 means current position)
ff ff ff ea  -- rest of match length, 19+255+255+255+234 = 1018
	Last 5 values have to be literal
	50 00 00 00 00  00


Checksum:
00 00 00 00 e8 cc a6 d2