Extrinsic 178687-1

{
  "heartbeat": {
    "blockNumber": 178685,
    "sessionIndex": 2978,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x3a55084c26952663688cba273d6fd1ff860eabb0d418fabed2e09c5ca4005b42268515c80376896ae6bc38a76cca2e8a4cee24d4e91c8ed3321e314109a58680"
}