Extrinsic 179074-1

{
  "heartbeat": {
    "blockNumber": 179073,
    "sessionIndex": 2984,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x668beea9c21a140a2882526322d9acd20d5e2a8904c833a4befc355cf92233160222c4b93b1394fadcf790b957250c4fd80d945069652a655d839099fbb3c387"
}