Extrinsic 29774-1

{
  "heartbeat": {
    "blockNumber": 29772,
    "sessionIndex": 496,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf0f9c26010084cbd033ede666cc29c2f173f810d6f5655dfee8c23b2dc5f365b175c653cb1c1161addca59c9d004ca69d490eddf84d21a20c553e8afbed98a8e"
}