{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15980",
    "entityType": "User",
    "nonce": "0x9df7c793d6929ea558c445a9c7b32e10cb522a6fea42e4cf9a99a010ef7440ce",
    "signature": "0xaed923e828f06e6b5cf5fc75df9b0a3582825ebd6959b97279061e91c288696e0af8aecaf0e574ae4dfab73c0f38cbaba0c8c9390375da1e31593a9d6fce2a841b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}