{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8915",
    "entityType": "User",
    "nonce": "0xdf8ac299149b117669fab96ff7ac2db335a8370705d3d5240f883633eded2a1d",
    "signature": "0x79dead81baba24277df24422a3cc04219cfbecda3c4fb2e55413034353ae7870763e581bd5180ca2d333e61fec8ee6d245cbeb82b72a6709460548e28d3f23f61c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}