Extrinsic 28907-1

{
  "heartbeat": {
    "blockNumber": 28905,
    "sessionIndex": 481,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xdcb4a4f9b9d762c43bd765f705900255a06bf227920e86cfaa81cd781e23f6566daf42d6e793966fdd775f5ab4cfe0ab49d0330821cd42784dd3bd345efe9481"
}