{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520317695",
    "entityType": "User",
    "nonce": "0xa1846005ba3146980f6b81e671d2ce748c15b4a47d1617e7a32768cef5d4e72a",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}