{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf13b79f425cc2da98f913b36c911a66abdb9d23528d8f9ec963c09780cd5528",
    "signature": "0x53b8154402b60cccbb2dcbcd6b8896f64f6a4acc901223e44aa55973daae044c19d42adc4883746ec8262c50505d25801b6bf9ea0d7608af741f42cc7d451d981b",
    "signer": "0x637f1e6F5058F9Aed16e4DBDD5F894f75e692076",
    "userId": "157230131"
  }
}