Extrinsic 177749-1

{
  "heartbeat": {
    "blockNumber": 177748,
    "sessionIndex": 2962,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4a5dde04324ad78755732030b9aab5ee69baa0f7d3074ce2e041f6b8043a697ae38bed316a1ff1b70b373262e2059028a0aaca9d102f0dccdb7018de1089978b"
}