{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x49c20fca12223f901fad870d9431d782c9e03758122b7b779bbe0b314ee827f1",
    "signature": "0x72477d9e591de74b788e172b7fb8179bc0fcf0e0c41bb569a1e08538cdde08c845143d9edeb30191c728c5623f5b928c273112e169bcbeb236da7dca69347d991b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}