Extrinsic 27399-1

{
  "heartbeat": {
    "blockNumber": 27398,
    "sessionIndex": 456,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc29cab0ee1a30ef9b27b763ee02704f5f084a8bce843fc8f23778d2cd7c9595a7f732e8c8ac785a3209e059322bb097a783923ae81219c407d199b6446cdb483"
}