{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319937",
    "entityType": "User",
    "nonce": "0xbd0fa1d27648ecd850f8091047fe98ac64416809ed58d1bbe72e06b4dff84c89",
    "signature": "0xee65f3cf4560a81b9a7ecd24d6934c64b1b8401bb784b5adea0bb6c7e11564ac7b4f3f93edd43794e0ce6a723e797f5a4b465faf761be40e41d699698aa9f97b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}