{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xac5b1bb784b9ea0020c52f8e729cf9276a624f65749fcc58fedb4f76af87dfe2",
    "signature": "0x3687f48e7cdc87284479094a1dd61017dc8597f31ae66a79b9b911f667485b251c734a98ccb80ff57d6ff814c4de376ed0e6dc41b888f32370a1b1ad3a9a5fdd1b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}