{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "496865",
    "entityType": "User",
    "nonce": "0x1414400b8efd587e919b5c90d7e98453575ad4cd43bc4e5c79ba2ab107d9b87c",
    "signature": "0x5a035cc3a101fb2ea28c53a7603b2d6fdc335cda01b2be3f274a304c405c558d06a335adef9b4531e1d6fd33063190052f42f0de6e4da005621c6f564fc086631b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}