{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7599",
    "entityType": "User",
    "nonce": "0xadc5f3070da64741193009b8934bfccd1fe981badbf0a397dd8975c8b04623fe",
    "signature": "0xb0c500e02bffd7e296ee23488b27c337fc5c957646c9a6c7f37f587dcd750b883f748dc5578080367e827f907aa4d429f8accfdf03e331711788a544ed8437701c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}