Extrinsic 81878-1

{
  "heartbeat": {
    "blockNumber": 81877,
    "sessionIndex": 1364,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x2a9596621b427025431eac4f25344fdf386df6bf34a7dce2bed279699fe51310b4ee308f281188502cddd0a14c8206527b42685c269bd3bef76837afa4823c86"
}