{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x377a8f11c429a40a9992e9efe231d1c7d9b3d37d28e4f602b3d2f4af7d5f34c1",
    "signature": "0xf45215a9b0c121518bc32709398cbe095be35808787e7011e729e8cfa064131f19c043bb214383a54cbd6f55173e43136b7de420cf42328c377d5874464a7d441b",
    "signer": "0x1E1d3E04188D953f557ECF4E23e1460BdEE5fD35",
    "userId": "107839204"
  }
}