{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50530",
    "entityType": "User",
    "nonce": "0x4c5549fde29662127bb9ffe51b23400c049d6c7c21582bb74e334fff83eca672",
    "signature": "0x7570afed550414e8281a8378f2f4608f7a7904e71b2fe11a9cb0669890aef2351afa2f0f1bf3570282670b41624f1be4869be8a6236973cd22bb40c8559307031b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}