Extrinsic 73874-1

{
  "heartbeat": {
    "blockNumber": 73873,
    "sessionIndex": 1231,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xda82e84cde8179f82ae602e345987fdf4b44d135430bb8e93852b49271ba743c8100e9bc958b87249d7ee8f0e0dd3dd69bb17ebf675ac4c70294e199c9574d89"
}