Extrinsic 57791-1

{
  "heartbeat": {
    "blockNumber": 57790,
    "sessionIndex": 963,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xba1a89bfa9472c9f8b8dc1166b8229f6d05be2764f20bd6d1819ed409bcc5542f6610fcdd874d76a702dc28144494926f9c4eb9376f99d97825d6d1ca9a2f688"
}