Extrinsic 48640-1

{
  "heartbeat": {
    "blockNumber": 48638,
    "sessionIndex": 810,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x52a4141ffa6a139a16f7d657779dc7a8898866ad5841dd55bb4d14433174343caa3582f37cd1762cae3d9c09f7e84be7a6926ff589a46cc098a2fb263115c683"
}