Extrinsic 5245-1

{
  "heartbeat": {
    "blockNumber": 5244,
    "sessionIndex": 87,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x2640b79f9fff1ca23477de23ef47d6ba48c8d74451a4b7df991df1c06223f13670c4edd4049f56d772f38e141e08236dd27fe3c166af59ac1599f3bd8091548f"
}