Extrinsic 39981-1

{
  "heartbeat": {
    "blockNumber": 39980,
    "sessionIndex": 666,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xe4ca9aee4efc3d465d88087dee20b5899eddfa91ef7cf8025800810c8e18e236f19e87b6647debc44443bf3d7d7e075e52d13ced9842035a4e6d3f5af33fa68e"
}