{
  "manageEntity": {
    "action": "Subscribe",
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    "entityType": "User",
    "nonce": "0x3981eb7a5a3e29a1ae6b246c93f5adbf1236451221bc8cef3c7194a94ec09404",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}