{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "623802085",
    "entityType": "User",
    "nonce": "0x7fbf4979a47e33946acd38bf1449cb78f324fb014681b78ecba7e2814a0f9626",
    "signature": "0xf5956767618b24e034ac5fae670e8fc241cdf1d7bfeb17b55cc548c28a78b67e083d3264a51ce216014dcfd2fe632f6ee953c29ef30fa5ea2bfd9b7b9aecd9241c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}