{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d41cc11e3380ed9acf4164c75f8bc2e508446b7ec21ec47fbeadd03e10fc490",
    "signature": "0xcb48b0abf59f41086cbd4121297da4cc81fdb4e0e438a975a9d564891289a4f5033fd89cd79cf25693ef00659bec3eda3da9b1a76fd353f08c33f01cdaa4a0601b",
    "signer": "0xf9bE09eDB2b1dc5ea0688437c625de4D05F241aA",
    "userId": "543334005"
  }
}