{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa90e29c7e48870f6dbbc0e84d0fc1aca05ea268d392d1bd4e04397604307adbe",
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    "signer": "0xE12C4999D417252c0f02E160bce541D4E85dE1d0",
    "userId": "166066089"
  }
}