{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324732",
    "entityType": "User",
    "nonce": "0x4e199ddd4db0a312affce2e2090d0a9fba3b451035b7fd9490cddba902aae960",
    "signature": "0xa3d0470904e8da0e7519129482d7e17928cacc73587900a98786735ba4fbd557488e0278854c3589d8ed9b202dbe6495769ca5402c6f28d068202c156e4a99491c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}