Extrinsic 6222-1

{
  "heartbeat": {
    "blockNumber": 6220,
    "sessionIndex": 103,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xaa02f61c31aeac88f7c626cff99c163098abc491e2ee8ca297f26077b74a3b6fdc6609f6ad45436c3d469b5fc95d15aa128b0a8d8bc4e06117164c288ef5878b"
}