Extrinsic 2623-1

{
  "heartbeat": {
    "blockNumber": 2622,
    "sessionIndex": 43,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xb613f33e0162b359b19456ee0e8d1927afb1fcc16fa10612411bb68a78a5373a1045229c84502793fbf860dbd066f461b34a54c08383705f3b96143b175b2488"
}