Extrinsic 30408-2

{
  "heartbeat": {
    "blockNumber": 30407,
    "sessionIndex": 506,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4cc3b4177504c8df872bc873219475ecd933e83abe87fc0ebb0b89bbcda2b46c47734ec71c50c3aee23471316db702d2b8033a123337c5c0463d554478eb238a"
}