Extrinsic 54645-1

{
  "heartbeat": {
    "blockNumber": 54644,
    "sessionIndex": 910,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x82317137ae9cae98f2a0732d39c1c53673c0276d88677de2002b61c263216900acbf8b68b942da64057caa556ab98ea28fff2a275576d3a62363c01f17223e83"
}