{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645526985",
    "entityType": "User",
    "nonce": "0x78a844574d08034a5fb05f2bb764f6e6c54f1575774acd404d1e67a7ea92d97b",
    "signature": "0x2efd30706370e107b5648100a000d7b237fd716837490e8868cb8bc95cad5db828319452eb09da96d7a4e2248f57c4422fe5a07b8f2d353e213efff07c08a2a51c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}