Extrinsic 27289-1

{
  "heartbeat": {
    "blockNumber": 27287,
    "sessionIndex": 454,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9c905713fa0698b58a79f73b9da8a42cccdec10ed8d03f2e4476762b2a72d20242dfa0517fb76077dec38d2feab59cbb07224f3be09b1ffe600966ea5dc4ad81"
}