Extrinsic 53555-1

{
  "heartbeat": {
    "blockNumber": 53554,
    "sessionIndex": 892,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xfec86c6801549987e5dd5b49541141f4c36f7966ef3b9ca18264e12371ebee46c7d0ce0d836fb4c4dc85e25c104ff02a96813b73ad5cf2927dee2b4fdb1be08a"
}