{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x306ac08cd60aca41f807af7bf44d84f1dc83646bc10927b5719ac33beba390cd",
    "signature": "0x7e21e6151d9a649c5e68788a3568fa3c4712c95a11987c4d64009a5cd8cbadda2fd568be3157d46d0631e5ab43083a70933abb17d4e30b38cf2fe2ebdb853e481c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}