Extrinsic 37231-1

{
  "heartbeat": {
    "blockNumber": 37229,
    "sessionIndex": 620,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9ea13c337e1235f2582895ff58d0d951798d074eae6f5e075cf6b4d640c1243b01f7a3de1abeaaf21c4e96c9ebc28fe7c098ff948d87d582ea11cea192f2ca85"
}