Extrinsic 9324-1

{
  "heartbeat": {
    "blockNumber": 9322,
    "sessionIndex": 155,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd464dc88a8b07c7a4a5e2e4c72a3ba1600d4503a828312f4e84df4677e5ff73bd34af5771f95efd21b0735fccf7c9738ce378b444abc6e93dfff5820f7d99c8b"
}