{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319260",
    "entityType": "User",
    "nonce": "0xbfe94c6f81c193d359ec43c789d129a592e8175a1f0c3400847bd886de721e5d",
    "signature": "0xc28ac05ecd9e4a4057f278c93bf6693aded156f1038cfedb83a4c01a56f3db260c8b800e5520ebbf6e853b7d917d9bd0453708425c41a862d2bf4044f4362a3a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}