Extrinsic 9621-1

{
  "heartbeat": {
    "blockNumber": 9619,
    "sessionIndex": 160,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x06e75a5e823175b3979d1156132284796438670312f61e8949e06e57ac574e45f76fea3aa6318e0c27664ea1c7c2e691ee9eabf23b441e8bcb9afc77919f2a87"
}