Extrinsic 6569-1

{
  "heartbeat": {
    "blockNumber": 6567,
    "sessionIndex": 109,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xcc9d2d972f86f4c3d622c6d23e128da62fac42be9e721c41e7580b2ea9fcd404bcf1a1ca6ff5e3047512c0fcb3f61e78c3aeebf21b8fa92bdfaf6d626edce38c"
}