{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbfc625fa9dab14b55d9f6a93aa9c1cc62b320d2373c73e588d8afc13e2e1f441",
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    "signer": "0xB5335ed1f87170Ae7899343b7D241eAB012bd1f2",
    "userId": "37615844"
  }
}