{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4647",
    "entityType": "User",
    "nonce": "0xf365a7c5eaec90a914b6c0af83be27b1fe4791a9e9da06b611609d91262bf9a0",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}