Extrinsic 23560-2

{
  "heartbeat": {
    "blockNumber": 23558,
    "sessionIndex": 392,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xc4f218ed97c7bddbd28a584e458ad5a48f4dc1ec41b603f04241883053457d09f977278604bcdd126aa455d77b32131b694891d591837e0329905ef99cccf385"
}