Extrinsic 171668-1

{
  "heartbeat": {
    "blockNumber": 171667,
    "sessionIndex": 2861,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x7e0cf4d3198bca399e6355cd7ac64bc6ae7a1bffb088d005310b166d3df716459434e49aa3c60d6ac4d196e0bf4458abd0423552e454e900d2ef395fd2784a8d"
}