Extrinsic 2863-1

{
  "heartbeat": {
    "blockNumber": 2862,
    "sessionIndex": 47,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x463a959da60857f0db02eae822473bc663009809182fb9d14e4c082832a3a5160eaf229cf9e5325ef7890af3e6d95f2d658b33f2611d8c173bea47b56a08068c"
}