{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x387bd8c0a26018445108fc12314289c6b350e382787f4e237ac6c234545d05c8",
    "signature": "0xc66b3be9a538308d11f4fe190c2a28669fbf39ac8c8d6ac5af1fd7358dffa68515f2e2fc6157f0a892c3ccc318f7848ce33ccf17b1efd2aac488191a4ea5ae4d1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}