Extrinsic 25477-1

{
  "heartbeat": {
    "blockNumber": 25476,
    "sessionIndex": 424,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x405528c6ccc13535ec871d810eac4bdc4e3541feb763f5e5a647d432f943b44298124be164c423124d5fc2fcb9ca21a56e06a20173f882042b3f8a1f6b542e81"
}