An account has bonded this amount. [stash, amount]
An account has stopped participating as either a validator or nominator.
The era payout has been set; the first balance is the validator-payout; the second is
the remainder from the maximum amount of reward.
A new force era mode was set.
A nominator has been kicked from a validator.
An old slashing report from a prior era was discarded because it could
not be processed.
The stakers’ rewards are getting paid.
The nominator has been rewarded by this amount.
A slash for the given validator, for the given percentage of their stake, at the given
era as been reported.
One staker (and potentially its nominators) has been slashed by the given amount.
A new set of stakers was elected.
The election failed. No new era is planned.
An account has unbonded this amount.
A validator has set their preferences.
An account has called withdraw_unbonded
and removed unbonding chunks worth Balance
from the unlocking queue.