{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x097a4a82529269577f9d5481138d49a786af936aafc0064cd93dc98c944fcaa0",
    "signature": "0x6596535b91f6d49beb974620e2c75eed205908ba0ee1e48818c2e4a52792556e4a95b76b8847a7ead73d90d59f9c974cb65b002b552847fe2089356904259e661b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}