Extrinsic 67721-1

{
  "heartbeat": {
    "blockNumber": 67720,
    "sessionIndex": 1128,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa24fe3462d7c001240e38f17a7a0dc6334c591490055fa0b923ee4a18e9a0651f9842461561f8ee025fe57d394be669c5e63a04955304ed6a247a079c8f72586"
}