Extrinsic 55896-1

{
  "heartbeat": {
    "blockNumber": 55894,
    "sessionIndex": 931,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xfc36989c8108fe12ae74d3034b3aaeb70b9f842cc4817cc035731d36c50afa19af732bedcb5505d0fce888572c78ac48d6eb1b563cfdcadd6704e5299314f881"
}