{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x836a2854aa466ea403ad67fbaaf8d80efbc9e1d1cfb85db69f930c4ac795f60d",
    "signature": "0x5202631ee10b3e2a6704f29cd476f8f481ab0ceeeb996fd69f9da7531993b1ed7a824e23229dbcf3438fba7adf4b1afebd3e0cf4b24408a8e7ffcf3134e98ebf1c",
    "signer": "0x6253a5487Ca5ADB465668B7122aa0cea88950f8D",
    "userId": "375002735"
  }
}