{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd495d745a0231ccb71758fdb48ba481085bc4cfa66aba1bbee30d8a284462263",
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    "signer": "0xB50069E16eF695092f0cE1f7923FBAd1A05aE92F",
    "userId": "366606352"
  }
}