{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16383",
    "entityType": "User",
    "nonce": "0xc3fd109b21b3db22f2a36ed5fbb5ff1a4dfc81926763837b84470c7949bd2943",
    "signature": "0x16215af0e9d0238f633790e542921ffbac6110409286ca3691498b3990b3bc0d55e196af7f9e8f7477c66faa63e3a5dd37924f85acfd220cec2b52df174add6a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}