Extrinsic 123404-1

{
  "heartbeat": {
    "blockNumber": 123402,
    "sessionIndex": 2056,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbaab37356ffc7c74d3d5b7345673b954fe27867b1baa56743f098e43db34910d4c28a9433d40159aa676d3e442adf9195cd18fb3b3215ffca132fd7d90aeb68e"
}