{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa98d23937bb7ceea7165e69c49e439779242eee86974132dc3d3a4926d8f5b2d",
    "signature": "0x104a45596ab3cf631ff36d2edf9fa7842740b4d3e89f57d0285ddec54e525d717ee92e9e937f921fb2347691186d74db89ff8776f556e2fa3104366b850426481c",
    "signer": "0x6291CaBc9cc2EB68C4d7C47437cE46F5910D554E",
    "userId": "721984945"
  }
}