$ python3 v.py sample_valid_bundle.json
authority bundle: VALID  objects=3 identities=1 grants=1 delegations=0 decisions=1 revocations=0

$ python3 v.py sample_tampered_bundle.json
authority bundle: INVALID  objects=3 identities=1 grants=1 delegations=0 decisions=1 revocations=0
  AUTHORIZATION_DECISION_SIGNATURE_INVALID agent-1  
  DECISION_ACTION_MISMATCH           dec-1