{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x11f54448e3cad502195adaa9782782a9d0b4ad0deb43773d1edd7d601ee51224",
    "signature": "0x1454c58f63337d6d72fa94cc8dc4e03c22e0618c423399f1a31a63eb7e067f643f59c393f163ed1e27d76fab628eceb6d17e134a6a4cf9833ae2292ee8bc380b1c",
    "signer": "0x8115D0ebFECed33C8DCeFf242B1a6a568F1260C4",
    "userId": "200742055"
  }
}