Extrinsic 13175-1

{
  "heartbeat": {
    "blockNumber": 13174,
    "sessionIndex": 219,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xfaba1bde97d3ed91baa0b641f622263cdc4a55c43817673fdd19b23f3956462668f2a746f39b7068e139b4a4d00b5045b3fe5ea6752272a1f3ca8bd9541a8a8c"
}