Extrinsic 176776-2

{
  "heartbeat": {
    "blockNumber": 176774,
    "sessionIndex": 2946,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x8cee77ed5e41a21d892878c2b67d65c54605444898f15c8b5433a1ca139579412dce11ec26da80fed8d7c35d8f55dfa1c6f7cbd48ec028bec1bc2420fe377880"
}