{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x07fe857ebb73388498aadcf26e9a0e793047dbd333e7eadacce3ccecbafee608",
    "signature": "0x198d68940ebc716590bd6c04411f9c5396cc903b1318f65eaa83cb01fe845043446d7d64dd86e636e49b8c541de83a2f200907f0c175f6d5eacef0d0ac24c45d1b",
    "signer": "0xF3Fb0396BDdA45046c86113667F3270fC128A73d",
    "userId": "471296820"
  }
}