{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584169520",
    "entityType": "User",
    "nonce": "0xdf72c620c95d5f33e94efef69e7352636ead90a703e1d8e366d4f87f12a353ab",
    "signature": "0xe633bac9071558131baef13c1133ff8a58bf7bd7e0adf2649be5db4ccc9de74b27314a0fe556de2b1c92156337f9d1045399ae86269df656d398a489bab51e361b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}