{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1509256763",
    "entityType": "Event",
    "nonce": "0xd3909448ec59fb23734a021cd6c7c91c4cd51aadf4dcf25c39b43e829e25d16a",
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    "signer": "0x82a95E02DD722e41DF2909352f65d5b8D3f4716F",
    "userId": "543792350"
  }
}