{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423154",
    "entityType": "User",
    "nonce": "0x314fd64b96f47187f28baa073f445a1d8c5ba14b8a96b3d47418642a93243b56",
    "signature": "0x69dc71bbf039168507340d2d203cdd4ca58717b19606f9c0f43dbbde32aa5670256ee588714d9d6cb557ceb030c986f16e9c9a5f8d0227298534e87f2bf8e3281c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}