Extrinsic 50448-1

{
  "heartbeat": {
    "blockNumber": 50447,
    "sessionIndex": 840,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8e22b7289dd8bbe96e6b546fcd43bcab5a506a1d82b6b6236d7910623ac921588f78b27033804207a05bb7408096452e629ad1d8e032f580afbb18bc05982b8e"
}