{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374065034",
    "entityType": "User",
    "nonce": "0x1c240399d77460b45259262b37ed868f319ee18c1fdd15c5c1a81e78030306b9",
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    "signer": "0xCd69C2Cb50a21531a08Db7A8333c51532ea010f0",
    "userId": "837274016"
  }
}