{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x7b75d9364d97a60ef4dfc331c066a8aeff83b65a50014d8f83c98584b4463230",
    "signature": "0x6ba53d055f971a1a3d4c9834a8b605a21e67a58de7b5653895f7579a873f4df842bcf9c53deb2f7da69b94a039edf9cdf3d0389c0f192ada547a3408292c9f891c",
    "signer": "0x7ceA71B4A8C4013A4f57c1A57eC0430915572e86",
    "userId": "31724295"
  }
}