{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297464",
    "entityType": "User",
    "nonce": "0x76fa3419c8866d2b140ce612d6d6284e0ac72aef30101a641d964644c72de4eb",
    "signature": "0x6b1051971c25bc07375c3c6ae1f519bc5df4081fc4e95e9a377cfb644ca1ad270633e4032743d374b524a51fbd9f85a6e45f18176360ae8caa1263ece43a5c631b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}