{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0xa8ed1634cc58d03bf45c0418b2b46844b1b6fb8d4c45d4cf918374bc21e38bc5",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}