{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909227630",
    "entityType": "User",
    "nonce": "0x5dfc2447e9a6b1621840af7ff6c1f38f8b0d1bd2c9bebad8b5d4f6d6fd6be168",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}