{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0x7816bccecaa868d417527415c36e2d6752458b127d23d0213afc97aec46b67c6",
    "signature": "0xf7a8f85b67173c56ec560df880dc5120d7e27726f60daa14b9151c16659adc840093be271cedd2fc09c6f6a12914b114e044d5a945b09b6d4419af2b9f843c0d1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}