{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1581756864",
    "entityType": "Event",
    "nonce": "0xa356dad4cfff705d5270fc22c7ddf8f16bee0bc1fe6a705121a5ab3d6c1a97c7",
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    "signer": "0x15204FDeF58bcDcf8d44D5C23424c6E3e9F3B8f2",
    "userId": "240171275"
  }
}