Extrinsic 26260-2

{
  "heartbeat": {
    "blockNumber": 26259,
    "sessionIndex": 437,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x2ea9c5ee433162923c017892be03e1fe6d9776246b681e162df99fb27d57ff583a00db3d7a2daf2447da6a11d803a6729044eca2f9624a8dadd96776c26a5580"
}