Extrinsic 48738-1

{
  "heartbeat": {
    "blockNumber": 48737,
    "sessionIndex": 812,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x80e536642e57137891c27510717d1a20f4ac265024ea8c336b0ec269c4084a504b0a71ef3ab4ac37c4fa5dcb380ca3053cfce4c37579d35d6d7d296c0298e182"
}