The ornamental design for a rotating massageunit, as shown and described.
FIG. 1 is a front, top and left side perspective view of a rotating massage
unit, showing my new design;
FIG. 2 is a front elevational view thereof, the rear elevational view being
identical thereto, with the handles being partially cut-away for ease of
illustration;
FIG. 3 is a left side elevational view thereof, the right side elevational
view being identical thereto;
FIG. 4 is a top plan view thereof, with one handle being partially cut-away
for ease of illustration; and,