{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75469",
    "entityType": "User",
    "nonce": "0x1d61e69a1b7688ecbaa502a04785b9c7969660ecd720991c356a6646647748dd",
    "signature": "0x984f0a5f742931da669022e397d4cddeff56b92f9aa3881b3cf41f8ccf4129393195f6e4c4f2b536a93d4f7049cbc01fc06becab49a6be8a214e41774881a63a1c",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}