Extrinsic 43545-1

{
  "heartbeat": {
    "blockNumber": 43544,
    "sessionIndex": 725,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xda39e2306f56cdaa1d31d530469b9954ba3971cc7aa825b975d1e8ded162ad6fef50367c98c257a8f15b855dd229274ce6779be99c13bb0afacee06086aa6a88"
}