{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x88dc53ba11e7d2d4e452bfc5488d670cd79db0f52844c916d406411d55d21e27",
    "signature": "0xa7066d84ea79ef1b4f1f4cc2bc8bac5bdbbff77c6f521223e960bf1f49302a7f6db3066d261f6325139350a6c260d3d3e26628f60a4df5e444b5fb5ced8d4ee41b",
    "signer": "0xF3D339554B27eD7fC75fD237d83A8576f7068124",
    "userId": "341525072"
  }
}