{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd0a3cfd3881ef4a02422b2894f38849f0a0a7da09dff86dc25d42f935b37b326",
    "signature": "0x4f869c5ebbbb9818226cb5df3ab5894fc06a91e475a970ad213a446f61ebd62c71333597cbc6951115b0c154f8d43c9b310a3abb98b56a3cb02fc875d644a91a1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}