{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c7ff0cc6f79afaabd06f3667b98933c7b91f20ffcfa04e88283a61d952099b0",
    "signature": "0x6244cf9a1f0418fc1b7e24e11e14e544a8fcba527ebbb137a89019fa820be40e00769881109025d8010cbc4393dea4b00dee2ba9fac26ed461e548db00b7203c1c",
    "signer": "0x680Cf34238296b9341c2e109b163Ac0a17c8d938",
    "userId": "513706473"
  }
}