{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512354652",
    "entityType": "User",
    "nonce": "0xf298b0e56d7f01e3b9059aa58f0d8cb3821f7caacc4e6573707007f2ecf3705f",
    "signature": "0xb3087e99a661d42c64ca5b0c1f5aeee822bd288a6d862ff31257345a59ed7eda552dcbfa36a8ff800c997864111baad607add70e2f954db9a9506de4a8c9204e1b",
    "signer": "0x1EEEf459C8e361773166d5681a5066659BC751D5",
    "userId": "210033902"
  }
}