{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "268337517",
    "entityType": "User",
    "nonce": "0xf663e76b30d1f14032ba97a5d55858247d5de1b8228354981c8b6f686f4a2e6b",
    "signature": "0x1d361a1a9e2c948e34db1cc6798613ef6cab0a8a1f7a4cdff12d355acd4953a020db98abd06253e75ad4fe8905a60e1c641d1b4c75abbf32bf347cef525c2d661c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}