{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54099",
    "entityType": "User",
    "nonce": "0x99c9c8fb4b4344a52ebe60baf488e7581981cd7125076dac61a1acb13e5ea4e8",
    "signature": "0x7c46970eb7cab569fe3520501a0f5bd81819ede0cf1b4cdb000b6436fb6840e771de932585576f81dca35a51d64c9d4fe7ff95c4e8a8f8003d382396658cd11e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}