{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x433bc3365e4b83bac405fde12da59a8c137b7a0b4af62c106951c562ce64c198",
    "signature": "0x573c2f8348e87f02ab7713bb8bce5194fa1b4dba293c3751602ee752e255d2e109d55bcf322339803cd88a7f6f1bee8d31b5fa4c92fd8a9e13e068b86c299f831b",
    "signer": "0x8FfE4D68AfdF34240202742331b49cb462b7e26C",
    "userId": "660197861"
  }
}