Extrinsic 25189-1

{
  "heartbeat": {
    "blockNumber": 25187,
    "sessionIndex": 419,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x76ffcf065f985f6adfb3457a2a2d60517f79a34baa72974c38ece06e17a0dd6634bea36e4e06e7758a03722cd1c548c56376b27d3b8099094c787503f0a4e388"
}