{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305192",
    "entityType": "User",
    "nonce": "0x724a05468128c254e65ae8f0cc360c9fd8fb46d745c840671a77e10360c431d8",
    "signature": "0xa1304d3220f53615e8f8fb1aac3bad391de6c4861b43d38b7580a1d40f6598606a23c1cfb902f18aee021610b092b23bbbf63aefeffcf8297d14aa07c01b71721b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}