{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "509651367",
    "entityType": "User",
    "nonce": "0xfa78a2c235276d6a68b97828ddb8664e801e068a6dbc54861dd9547ce37fd7ca",
    "signature": "0x58ade135992b104a57f7260a59c190f312bbf5cfb6e96b48cbdd93f122fe3e3033a4b2b0d5f082fd9b9ed9228cd44bb49efc011d650fde28a3aed5d4cfc1b62d1b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}