Extrinsic 13409-1

{
  "heartbeat": {
    "blockNumber": 13407,
    "sessionIndex": 223,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xc828e27acd1c17bf5bb247dc4201a1211d6fb870b557d24c9cc30091c04f4569033e96db3fe08c71715324324b1a0d3a6cd3f351ce0b75a1ce331655c038c988"
}