{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2117cdad027f97590bef2941e5546759c5ceb96024c3f027a13c86a77d4b352d",
    "signature": "0x0649093241eb15fa0f095e7ac6a6fb85e6ca85f36cd6b96f8ac04f3d72b9afe6020175a80269f37f2f8e7d3e2f5cde47ba5dd7840d8d40ca471978007c6d0ea31c",
    "signer": "0x42d85804437F1ccDD8A6611580A4b506EC0aB8d4",
    "userId": "477182402"
  }
}