{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0xd7485c5b9e54bb33aa5655af23908e34c7a645238df890519f5c84cc0199ac8e",
    "signature": "0x4d867ad7e9818406ca3b25bf0b7e3fc4f7049cad4a59e8bcea2f6c4b9f134f4826cf2f61775a846a7a9ded023804a2dd2eb00fba11a28646724b4ed6626118921c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}