{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xc1110f6011f330a8bb7fada49bf13b6f9b0ecfe5fa65f2ae169faf8c2418f4cc",
    "signature": "0xb2f7ee6eea24e37a47b4f25fe29f22fec06c4e6e48b7edd43c32395f4ba2706c4c96e6f5bf02ef8b3758c4c41aa32521d861ba462a8ddd5cfc601623bd1b50041c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}