Extrinsic 120874-1

{
  "heartbeat": {
    "blockNumber": 120873,
    "sessionIndex": 2014,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xcad76e9711878d9c460601103591a0afb913221f32e6867e9f1620480f57071fdc297673cabf3e5db6a5093652460fdf845bb7183012149635d7abb1c005e284"
}