Extrinsic 14747-1

{
  "heartbeat": {
    "blockNumber": 14745,
    "sessionIndex": 245,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x8ef9210815e0ac1119b6441665e45eff7c9587495d4d62ba088206b85f1ef456b48057699a3ff4322b0bba2d2f2affcdeb9dd298d7dff0dd8e53e2079b83e78d"
}