Extrinsic 26493-1

{
  "heartbeat": {
    "blockNumber": 26492,
    "sessionIndex": 441,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc473821778db6f6ea1337cadd6d4890ca5ff9cf767362ab50fd6cff2f0e83e7de8f391070f534cb7d31b9ab44662f7e092cc494024114a9635b8252f6358f28a"
}