Extrinsic 28338-1

{
  "heartbeat": {
    "blockNumber": 28337,
    "sessionIndex": 472,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xce1277448e3a7290da60068fbf4df11182978ca364d989911bd660e44388fd60aa9f3b48dab4b2db483a9d1278181c6e155142952db4949450808ef21abf9e88"
}