Extrinsic 150073-1

{
  "heartbeat": {
    "blockNumber": 150072,
    "sessionIndex": 2501,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x60b257ed3e580ecb42115c2a8fdb993ff873d92bb2bed397af2d3600cb59547c0de8822bdd304e9fe403036271da211ab125b9f2982104d18ea2957bffac6c85"
}