Extrinsic 22209-3

{
  "heartbeat": {
    "blockNumber": 22208,
    "sessionIndex": 370,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xb8bb30ca0876f62c3bb58c191e0eba86bd81750a96c879cb9cee2162f33bd44ff49c9c62fbcbaf4d51ff22af205209b5cbe9e73c8755d7e10457e93f2f883987"
}