Extrinsic 3088-1

{
  "heartbeat": {
    "blockNumber": 3086,
    "sessionIndex": 51,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x745139c84c4e80b19eaf2e38f0093a1a78c1227a9846d00c1517bfdbb9920478fe18cb19da24ade3a63bf439986d06908e2897305f2fc465de33c168458bec8a"
}