Extrinsic 30308-1

{
  "heartbeat": {
    "blockNumber": 30306,
    "sessionIndex": 505,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xf47ba3788414d06d0a399e875e7c4a25b4b2880f362858ee83e80cdbc87c056d5ccd1d795ead0be597e6a6403edce46eda934f6d9de083493dd502d3ad2f5a87"
}