Extrinsic 45393-1

{
  "heartbeat": {
    "blockNumber": 45391,
    "sessionIndex": 756,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xa6f5483d1f99c8f2bcd1981f72c967f5124f789452b2376727e3c504e44e0c22e8a8f3931bc111a3ab1fb8a98507850b415ac5fc9b047afcdfdf6e3aede1a589"
}