{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0x45b21659936acc01ae0ff52c2ccd2daf9e5886ce4039ac30d726daa2a01a33f8",
    "signature": "0x320239eafd93dd3518127f59b5665f58cf5487a03c3264f0133f008dc72151080d4ab2a605bad0b2339a6d0b9f15ec7ef0f7ae8a6a73c958687d054d6f8412001c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}