Extrinsic 48646-1

{
  "heartbeat": {
    "blockNumber": 48645,
    "sessionIndex": 810,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x123b9e57d7b466fb6f692de7159dea8a949304c44bb8b4416629b12d53ecde76b518e6371b0d70399b745b913b1e2625c88b05730c20384e4079cfade9eeb58a"
}