{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x54f725a08219fc4d550c52d1d8434666ef28ca24325d3b9c896d491e048e0d98",
    "signature": "0x29d5f4ab0670f1ccdb51120c99a206558656780d834947f599b959e375f9d56b230ffc07f7ba9564f8cc9bfb369d7c7425d7e2b395d4325dfaeb70f504fea27a1c",
    "signer": "0x436C8eC89f4B4aBE1B09b0688d363d99714AD7b7",
    "userId": "504283937"
  }
}