{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x1f50f0294756e20ec148b90e9defc88a7046444d3845acca30d4bbed036231d7",
    "signature": "0xfec1202cb5688673854ea6b45e831fecb2a43b18c1d313c1e2217f0a32bc953e7916b25b2f24f7ae5c3c20feb5a37d2ec3ce00f157e90d96cb7de644c9f00cdf1c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}