Extrinsic 75878-1

{
  "heartbeat": {
    "blockNumber": 75877,
    "sessionIndex": 1264,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x626d41ab91c6d66c12c9e03422cbbffc9c2cd4498e9dc7cf3606df7cd3272e48878b331cced3d616662e5dedd5cdf02731d0fdc8754022b2f6664249077cdb87"
}