{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900251038",
    "entityType": "Event",
    "nonce": "0x08d2a6f097691cdd590e59914707bcfabb95d034f5c7939ca60d0707bff79613",
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    "signer": "0x6875221b28e331DCdFDE978e5c8f8AEb982e9E89",
    "userId": "91003041"
  }
}