{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353865431",
    "entityType": "Event",
    "nonce": "0x835a61b34c4c8b2d2ec1c5d0082cb683cbf950227b255b81f391ec707df65743",
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    "signer": "0x73C69e0c0a50f0E228106C863e362C350a86Af87",
    "userId": "190031"
  }
}