Extrinsic 45574-1

{
  "heartbeat": {
    "blockNumber": 45573,
    "sessionIndex": 759,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa8bb8344a024c010138b90d2c5a20b78327c4f28e653f66356588cfc77615479e71a9377e86ecef949dd0eec5d61ba97c621ac5f6b13e3b990899f3c78b6898c"
}