{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1420432",
    "entityType": "User",
    "nonce": "0xdda158746b6711e510f76e8ff874e055021d3d90ff5a1ea5b81c71ef3e0475b4",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}