{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "183728247",
    "entityType": "User",
    "nonce": "0xe12b2489622b9cd64b43c383f81844c16f269f8b7793ca87f8e7045dad9508cb",
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    "signer": "0xE6F0C0996337D1CB10ff5158F0096899F6270aB5",
    "userId": "192398322"
  }
}