{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42521",
    "entityType": "User",
    "nonce": "0xe6e7b832fd2347659f4d9de0fe2652a12c6ec84e04a44c9a372f1f94f02ea72d",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}