Extrinsic 38504-1

{
  "heartbeat": {
    "blockNumber": 38503,
    "sessionIndex": 641,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x0e22f67626b48a1ae172758104512be2d4e4f1110b05e353c0e60c4e4c589f255ab4f9aea757c0437aedbe36ac99cd1af607fc383f3b0c53fb87f9eaf29ce589"
}