{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390365",
    "entityType": "User",
    "nonce": "0xc11ea1d708195fd3b475b9bc04b8b2f6a3ed0948cc45be184a17274e444d2960",
    "signature": "0xa0ae09e630438f44cdc71572ccba2fe8b567596dd16c55ddeac2aa51c275ffd2762dd69d95e809c4ccf6dfad935ca3012bb0e886d8e051e36f388d1c3fceeaa31b",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}