{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbc70adb95cbf6c79f8b4de2b1afa49e48f44d8bfe2ed75c3a9a93702541e5973",
    "signature": "0xc7038f9636f3c75be96ca2dcaea3fd1e9fd6f17c04e1e4ae7b9621e4fc6c19f423dfae5b5c335e491bb755071390705aeec79e0097cf6fc4663ca81f04a990b01c",
    "signer": "0x5d989a5ED8c868bFA60af2C69406572f8F79b587",
    "userId": "821479447"
  }
}