{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74582",
    "entityType": "User",
    "nonce": "0x4b5c2c7cea04df95fb491b408c21cea6b6e1a3c02e8abbb783958dc8e968f780",
    "signature": "0x66917e093568784f6c0f87d2f1d1bd58f38a4d3ca2bed7c0af285964fd8f32346b30cb34da5cbbfe014b7be349e2aa8d82224508f93fdd8becbc928c61c226ec1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}