{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215104",
    "entityType": "User",
    "nonce": "0x5d0fc9beeb650bd1f03492dbc79128abe8d6fc7c58b5e89e3da6c80289b1f794",
    "signature": "0xc81791ddf2d667cca5dd9a467afaf50ba936c403aca389f0fdc08c5ad3863ebc3d1a9c81317191f0daf072e06c9dc0b13ab9fab633b3fc0cdbf5f57d40f061411c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}