Extrinsic 27578-1

{
  "heartbeat": {
    "blockNumber": 27577,
    "sessionIndex": 459,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x5aafdd50ef4c24409530bd03b2c3f99477f223d5aa425ad5ff3f715ce3c06f0afa4797a698ba40751c159abea392961f2eece185dd09086679d4a245f17d0f8e"
}