([Fe(CIIN-III)6])4- + 12 MnVIIO4- + 36 H+ Fe2+ + 6 NVO3- + 12 (MnII)2+ + 6 CIVO2 + 18 H2O

This is an oxidation-reduction (redox) reaction:

12 MnVII + 60 e- 12 MnII (reduction)

6 CII - 12 e- 6 CIV (oxidation)

6 N-III - 48 e- 6 NV (oxidation)

Change the oxidation states