Returns the vesting schedule for an account. Replaces /vesting/{address}
from versions < v1.0.0.
SS58 address of the account.
Block identifier, as the block height or block hash.
Sidecar version's <= v10.0.0 have avesting
return value that defaults to an object for when there is no available vesting-info data. It also returns a VestingInfo
as an object. For Sidecar >=11.0.0, that value will now default as an array when there is no value, and Vec<PalletsPalletVestingInfo>
is returned when there is.