{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336974",
    "entityType": "User",
    "nonce": "0x2a21d2d71e7631d0631840137bc92bab2915e0b9fde9a6d7738f0aefd19bbfd6",
    "signature": "0xd64b5918cc302d7f8141cabc77507902c7c53a08e07d984b50039a7b21de0104520d354911101ddfc865afa0c9b76e94bded5a4e2a81f7ed7c2507dca8a362411c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}