{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578212224",
    "entityType": "User",
    "nonce": "0x44acb13da2b86e307dbc58e42567b48bd46dccfc2ac7281ecd4450b8cb9a308c",
    "signature": "0x3224ca494226ee370228f32abf141589f964d049bbf067992547de35391fb3540dbe79abd373dd271fd34dfd8cceac6b86f1ef66629e2dcd2be79482b5d8708f1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}