Extrinsic 157478-1

{
  "heartbeat": {
    "blockNumber": 157477,
    "sessionIndex": 2624,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x12cd9d10e3b90887e0d84e68bb467644701630800ff99ce7a9eb63a4fdda2715b0a7fe0bf72a1144b4c749c7c46dfb47b31f9e3d9469999c725fd6b902f9498d"
}