Extrinsic 172452-1

{
  "heartbeat": {
    "blockNumber": 172450,
    "sessionIndex": 2874,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x72501163b5446a7a1cd8ae23cad824e3b32b92d938c105977eb8df956991001624fa15b0de3d4240154f8a43734e1d3e5e7f35bee33bd68d6b749818a3f57487"
}