Extrinsic 34481-1

{
  "heartbeat": {
    "blockNumber": 34479,
    "sessionIndex": 574,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x4a65471e6d66c3ff0fab9efa3c4199c60242ccf09238472098b2e3d6106cd209113ffbd7303daed15bece157c0923d9f054b2e5e0485bd223774670f73645d87"
}