{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54141",
    "entityType": "User",
    "nonce": "0x9d062754184c13a5a348b475ff712bbb7ad87f736645c937a3d397feb287af49",
    "signature": "0x5c106b0c1d18d2800ae2379607c7f815ac4b317d4403de820271aa1969784e6f324c2901d8e4f5572c6802670e3d5869260cb65ec53a8a967b91e02d4331d7531c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}