Extrinsic 4718-1

{
  "heartbeat": {
    "blockNumber": 4717,
    "sessionIndex": 78,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x24e7eb9f25f1f1f577c7f97870c9be5c01cbff39ccfe59122848e3e1f0fd211e2a666f9741a2580aa62203ffd32762952b001c09a5fe5365c2befbd85ef91185"
}