Extrinsic 44748-2

{
  "heartbeat": {
    "blockNumber": 44746,
    "sessionIndex": 745,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd68d7e70421606821a3c0a35ebaa5dc6b8774e8f06f28e9e94785cedf5edf417aa28f9f83dc7453e4eb69d9d016c022abf134aa540781fa07d18ad6719d02c88"
}