{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0xa4e0a4f3fca50e8034579ce37cf1480038a92042a6741a1c7c848a850b47b8b7",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}