{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54304",
    "entityType": "User",
    "nonce": "0x38436a9efb8c441384e3d1e94196c434a52bb5ac138ca503bc0cb1750c16235c",
    "signature": "0x121acc9d38342d49e7155dbff6b1a0a7e319e6b087362be060338b8cc10df4ab43f4e91a52ad934e24ac4e9b0e32ee64f61316ec9cc3888fec3683c2296e1db31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}