{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297007",
    "entityType": "User",
    "nonce": "0xf47e8ebf3fa92f3f5ebe61dab8f48ebf27a99a6260c3f06fb94138cc0d84eab8",
    "signature": "0xfd8fafccb7ecccc8fc17a2a73288accf511d0c832840c873574a923175f0d34723af4e3f924d900e6d8913e6e78b8792b40d6c02e94b10264db86e910f2e003e1b",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}