Extrinsic 120490-1

{
  "heartbeat": {
    "blockNumber": 120489,
    "sessionIndex": 2008,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x922f453af967651c23893ac0ac8fb3fa78048eb14df1d519e900da6559524d26d5597f4ed87061b96e3eb08851ca40727449df0b9f3724a621b28f06a5661b8e"
}