{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xe2acec70b7e0a2bd94ef789db1148339a548f1e733177df743a48585e71cfee3",
    "signature": "0x53af112dfd78d00e728f70749c2129ac76cc45ec8901b4ffa2c58f019e93a4db4c3e47b8199e84e1342f00f5bf21d7ddab190fcaae7c1e954faf07428a8d30501c",
    "signer": "0x1A523ec8B21411C3F7d611FD345362ad54805b2d",
    "userId": "230518"
  }
}