{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xf5cee8b77caa7e7554f16e2f6c3bba0592c7265074214e565241ed45723fc244",
    "signature": "0x834bbdd7da6162f7fee5a7f6b2413fb9ed842a38e2d639fc4b27c3bd2cdc62bf66b7b274c20eb90c939ff52a264d890b43e69f4039cb461acf6ffdd2a5e2e1481c",
    "signer": "0x0E1419Aff1544Dde5c4eebbCfA208Df83ACdE40A",
    "userId": "564626302"
  }
}