Extrinsic 23978-1

{
  "heartbeat": {
    "blockNumber": 23976,
    "sessionIndex": 399,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x16dc1ad9db4fa4110407ff1307b9212061045ddd2a91e96e96f39b6dc9dc225b32f04567bd010cea02ed6056b8ba1dff0f9049fb5e2e0ad457f898927f6dc18a"
}