Extrinsic 14962-2

{
  "heartbeat": {
    "blockNumber": 14960,
    "sessionIndex": 249,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd8b68566cd10fa235c2c50002234a76e184f29382a8d3b4a421f7b78eac5e15cd2320273da9e523b26721cf47835d023348d9b67f85ebeb136b1ad04c8708484"
}