  We investigate the relation between the subleading soft graviton theorem and
asymptotic symmetries in gravity in even dimensions $d=2+2m$ higher than four.
After rewriting the subleading soft graviton theorem as a Ward identity, we
argue that the charges of such identity generate Diff$(S^{2m})$. In order to
show that, we propose suitable commutation relation among certain components of
the metric fields. As a result, all Diff$(S^{2m})$ transformations are
symmetries of gravitational scattering.
