{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7511",
    "entityType": "User",
    "nonce": "0x5357008c0c579544025f8df3950397306705415e046ad2f6e2d7d349096454bd",
    "signature": "0x89b018096e4c115c2fce30fff95861579643e6beae0c13a20eedd9b2ae3b57333eda492bbc78a4acda28c6cf0eb4ae8942e42232a916ebed6dee035de42239a91c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}