{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x65c7dd8ca86bafbc7deda18f5036e88e2e98206ffa947ee761baa59cbe2c67a1",
    "signature": "0xf0d502c1d105a8dce907d53a617effe71deb318094b5edee19040259b54de26935db1d1adcb8f36d043c6faea2e3e7241fd5d6d7166999eb6e4031af95abb6151c",
    "signer": "0x18a7B3405E81900d8aF72d98D5f2C54e2C988f9b",
    "userId": "42634173"
  }
}