{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335878078",
    "entityType": "User",
    "nonce": "0x05db2d12856b403baa62affd718ffc570c9b4302be5ec29ac5b9e34a07a3045e",
    "signature": "0x0903b73c6fb7f1c12ac61d212fb6c1e858a13a80f48be0317c7926dbcc6b31126f3881558737375ff63ab7cbafe8919c300469a717fb26059b8aea32bb2732ba1c",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}