{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0xd37d0978075e3eb035b094b2687295a38bfe2b7fbd1cd9addb2dba7b532153a5",
    "signature": "0xa2d0e256a0453851e39b859e8366169162604e4335cbd24a4e8f9b341ae96bdb28fb02cd8c7a67fb7a7abb3a7b5818261ef8fa843b96dd30fe57746443108d361c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}