{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdf2ded1f8fde2ad8003883638a79760401c5a3c23a99631666e613f776b716a",
    "signature": "0xbbdd175775609ee71f4b95fcfff12954be662b8afc299e983fe134fb41835d4d5e5d0d1dd927bd8e9f17c24e5a7aa543e5f9868a0589cbaab41643bb56eadd251b",
    "signer": "0x216006Eb66bF299Df7dC07125984A9B897625380",
    "userId": "922511437"
  }
}