Extrinsic 64719-1

{
  "heartbeat": {
    "blockNumber": 64718,
    "sessionIndex": 1078,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x02fdcae3a6acb51678cd37abac0e5f1114542530f834237184a4b3a231a23c73e470f10a5cedc9893bef8eb163170b6674370d2c776fd4d89409da45d6e2de8b"
}