Extrinsic 56774-1

{
  "heartbeat": {
    "blockNumber": 56773,
    "sessionIndex": 946,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x127e133f1d1f453adea2e3349341ede5dfe8a4c713cdf7405ac5f3118bed3f1517f48910af45d589442f4fd651c85622ae7940fc60b17e3b549bd2f224e42c89"
}