{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x81190266ab086e27f50d1ee36b7ec44b152268c3b44b77716729e238448806a6",
    "signature": "0xf996d912a902a4ce49873eacb1f83dca2d5d30c4c6cc6c31289ce4afff83e3852e5418c5bab02e1f55ab0427eb403944e9d48c612543077afb9287e0553c16341c",
    "signer": "0x87De5c8a3F01F100F42c3cc47f46EB1F97884ed9",
    "userId": "9155051"
  }
}