The ornamental design for a manholehangerdevice, as shown and described.
FIG. 1 is a top view of the manhole hanger device as it would appear when deployed in a manhole;
FIG. 2 is a top view of the manhole hanger device;
FIG. 3 is a right-side view of the manhole banger device;
FIG. 4 is a left side view of the manhole hanger device;
FIG. 5 is a front view of the manhole hanger device; and,
FIG. 6 is a rear view of the manhole hanger device.
FIG. 1 includes broken line depictions of a manhole which forms no part of the claimed design, and FIGS. 1-6 include broken line depictions of an arm adjustment collar which forms no part of the claimed design.