{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0xfb29564b417291b3e14b3c9b2017e03f06a0f920db965d730237b66808f1d54e",
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    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}