{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0x8c3e23d27fbfebb301f226c11abba001f5bee4e18b7b07b4c59de7c2d82daf76",
    "signature": "0x9401332aa8d1a4fa1c8c17b15b12cfb8f22012893a242334a53fc230666c102042b9f7ccb2e3c04a59e587d3992709a9ce6fa6a650d6544d7747cb8db0ff60241c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}