{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xfef0ed0e6ca73d44d3e5bdf4a73df7b7de93b621b17b9e5b389d829960aa556c",
    "signature": "0xa519b6457d27a3aed4b57ee5403bcc819fcd76f161afc95c78072d010ab8155b168c80d0c11c5ba0f5896a96d01c8c2f31daf571c3a6d7ad5af30be692d2c44b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}