Extrinsic 177278-1

{
  "heartbeat": {
    "blockNumber": 177277,
    "sessionIndex": 2954,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x244469835b61fdcbe51844f22a7e06b18f582b7189e7c448f865101821efda119d06ddd4307f239e9e1b851a17e33e1fce45a5294508967e57458d5b205b088b"
}