{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400983",
    "entityType": "User",
    "nonce": "0x110453b2ad77a1862dee520f3a1172a0159e2f8c18f45ca131318aab52a8af65",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}