Extrinsic 31272-1

{
  "heartbeat": {
    "blockNumber": 31270,
    "sessionIndex": 521,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x644f1e746ae37dbc5e76e7f9d28cb02e05dbf618d177406c7e3c7b3ca56b104bb9a3bc710b02180b951c5ba3d3820c22753398610d457e1350e78df82e02b089"
}