Extrinsic 48514-1

{
  "heartbeat": {
    "blockNumber": 48512,
    "sessionIndex": 808,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x40d5e855d0fb3ff7200b594f41f991566b8a50cb167639469b508c0847a73e108955fffc130bc36d9567b8c511f5b3651e2de655717bcd85e16ec4e80228b48d"
}