Extrinsic 27927-1

{
  "heartbeat": {
    "blockNumber": 27925,
    "sessionIndex": 465,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xa8a0978d0117cf373e47ca29f94864a1b0e8f7021606cb7013f985b5199e4c6958a467f1c014f287dc3999cac1a3f64163a4d472f57ea97664c83c1acb4a3384"
}