{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xbb96111d5505c430c9712526ff050b8a0cb1fa590eccadc1d5aaed9d92c77071",
    "signature": "0xbf9c030fa5ce453e381e2e47dff3cfc88e2097fe1bf801ddf54162ebe4dcd17066ade326ed3914b256b7f714d0cc82ca743471e602798ed2197610b44cae308b1b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}