{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1be9ca28fe66f533e0d441fc12bd9f5181b92a8e992fd04a8ccb5793a3f6b2e2",
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    "signer": "0xB227b5714d8d9E116E22EB31CE44F67C7EA6Ab1e",
    "userId": "113404150"
  }
}