{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0xbabb2b5e7eeae2cd2aacd6d93397bb06ad579ce77ddbf94cb6303dd4db8b418f",
    "signature": "0x92b3f8dc25b05230f16071da906615a40185aab8a65f6088e28cf966dbf8b1cc794c43a5c949b322bcbac1e914c349817d5f2ede7f58b4415be76968c5d90d651c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}