{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397473",
    "entityType": "User",
    "nonce": "0xb1407e2b08924e1a2466622ec6f015149e86d4065c7aa56841d2c1f39312925b",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}