{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "239420",
    "entityType": "User",
    "nonce": "0xd53a54eec8c9c5e3be52a5f0ecc62ff6f09921e677ea9c5b9594b018612fe453",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}