{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64798389364164358807c53cd577bdc32dbfc2d92595ee3c91a7d0a01a2a6a12",
    "signature": "0xa57c58598f2c491589d50ef6d21340e5723732c40291a901a931d86869fb9dd10cd2f2f21577da77e25c6771a9c17c5caefadf554beab3c89e1ae45b2c36a6481b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}