{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208551",
    "entityType": "User",
    "nonce": "0x1f051e1efa31b04593b62dedb9972c814c42463bc89cd720bafa9a38ba795078",
    "signature": "0x6080eb8354b9426c40c6389effc0842e63bb2f3578d91222e700535cbe4771c244cc7b59c6d1289f868f7f5baf5f210d6ad0f94e856ad0d5b7c71513fed08f151b",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}