{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ea4fd6ea95f50b18341291cfc32fae560fb300175a9d95d7b1b9b678e5cc424",
    "signature": "0x536942c11ca622c2a20f448d4a9fe83bd9509af931d876bab447949ea36ff3827b74af08fca92abeefd26cfa4ee9942263eb9594661e6b1e3fd7de2c93e3cff81b",
    "signer": "0xB6f5AB1800373C495226392c2cc7dCdDeDdD0C78",
    "userId": "38340762"
  }
}