Extrinsic 123258-1

{
  "heartbeat": {
    "blockNumber": 123256,
    "sessionIndex": 2054,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x9ed7abada06dede6f2d144dbf48f9a6f1d81768b8635f53ca9355725b2d38576eb71e8d8f993fd4a8acc1a7851064a2e98ba3fa486a334704cbfc1f1678dd881"
}