Extrinsic 26907-1

{
  "heartbeat": {
    "blockNumber": 26906,
    "sessionIndex": 448,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd8642c13602980d282151e50eb266c2e28d2a47ae28e0923ecc10d01a3201d3e436e6c4e9c4d32b3a208b9eaec82ada43878d1d37a8427919ef2e6fedd85f480"
}