{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x75447f28cd7dbfcbbb4f9de270bf6c78ba42f1d08f99b9e1d620d74d62e0f19c",
    "signature": "0x1db0e63be7227e759c52fbbc527495faf3936c2061cfcb0afddb6c131956180b373b876cebc9b71a37fca72476cdd1a8a34d75d2cb7f71d4e5bd729c3f7910631c",
    "signer": "0xF11F60bFb591E532d6E71E699ddfdfC58f377CA1",
    "userId": "458027684"
  }
}