{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6411",
    "entityType": "User",
    "nonce": "0xa41b0b56406be6965bfa085cb28e8f885917e202ee37b65d810fad1428e6f6a7",
    "signature": "0x4400b1a19a3dec0139a16536e6ea4ace312218deab144c92fda810b75923658320c7280c4cc8f6a6ff8fae1dfe3c8066c0a17ab6afd011d02ed69bdfbad913841c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}