Extrinsic 130602-1

{
  "heartbeat": {
    "blockNumber": 130601,
    "sessionIndex": 2176,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x2e9c1520c93727f948a587d0a57ea12332c599cba67ccf19f6969607d500d71bf4a176ebc16218a27c18443d4576fe5feed2558e0dd09e766af35a60f67c9b8c"
}