{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d12d28f6e7577946ab389ac454e109fe4689f04b5f4196e12387420f57dd24f",
    "signature": "0xe44ed254bb7f99ad12b19ea6ba1b76e18df1f0945701f2e3f1167deb9c5a5f6233ac053cf591e214d5881c73d13e54d00697bcef83c52435497b0a43469550191c",
    "signer": "0x62b0B90709A123AdE4b3809Edb0ee6dCF590BA5c",
    "userId": "837041148"
  }
}