{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xe8a9838d7df20465dcb32a7e2631d3c5e2383d5ebf572514a68eacba23200d70",
    "signature": "0x407f22d2e7ebcaff371372ebb5165108d7beedd35de1f99543b82cffc64628d5102e742191c82229a6470d6171947fb5f8f941ae2c6fade3439980afe8f5a5bf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}