{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x6c8063c1de41fb793b9132be94a73ee25eef814b6d5d1874b31fda9857b349d2",
    "signature": "0xfbe7498a91fb936c3d1a6df089d8a1fde3311b437bb3e5c0a2e311b199f0ff4179e0218255915e093ba6a5cd46ccf958880e191b679ca69ff32439052abb7e671b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}