{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0xb54302ec32e5a6999cf31a6ce7faa3f5024a5d871553a665aac03cf7478f9400",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}