{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2e3444a0b15fa40e8b15fb9c770ea7b481a0a3d9a14b6836cf00497cbd26947a",
    "signature": "0x0eb67c2bfd2eadfe4d24d07584532e9970ea7d601c5f543c8a44db5db962ff182543393ae2355640aea4a60f6f5e4e0428298d59bce84aa240d772d65eb550221c",
    "signer": "0xEb97202446fA641dF1494AFDFcD92e03878D7f16",
    "userId": "103041929"
  }
}