Extrinsic 177609-1

{
  "heartbeat": {
    "blockNumber": 177608,
    "sessionIndex": 2960,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf8e01ea3f3c30648a4bdfea1081bce6a283a575a564d421d0cfefbc22e42a559deca1798d87659eac576e54c0200ccfb7798ff7aa940f8b8c06db703acf4598a"
}