{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x09ceb5302f77b9543368913274f5aaaadfe63871f6bee61507dd49483d2aa2b5",
    "signature": "0x0ae91857784b813a2685cd977c0164dda2b36ab68fa37ae5df07a2773f41b6a578411e701aa78994ddf99529449bf1ee341c65aead4d602fcab9ba6448c75cad1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}