{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9d6c5e125563496207e1ea8a85f336881bc50db91bcd42dc2f36db390817cdd",
    "signature": "0xb09091bbf1c306dd7b1c26d394e186d1c0158b859a937c45f553ef884c2c628370e98f7d65d1aaa7fde7a9f8643309069620fdeb2b8d9589e7088b7abe4370091b",
    "signer": "0x0270E7cEc81bAE1fC92D46090cA8E981d5691aCE",
    "userId": "538676799"
  }
}