{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74570",
    "entityType": "User",
    "nonce": "0x6e96789477ff43f5fe0c584403adb2be38e2018a71d9cf70a63b2d9cbae795af",
    "signature": "0x2f6f4dd3e9a418076825f3579b1284da72ba4ffb5a9911ef022d39a0963fc34650dd99a74b6e58034df5f3ae72e50e0c140f00ca09dd37897ec8c4afd8bfae3a1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}