{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68550",
    "entityType": "User",
    "nonce": "0x5b3574b7a4940a43d81e505e3bae2b0ae69a075b2afe750698a6e78dcf6c199e",
    "signature": "0xe41aa836fe74a663e1758d1a112349aa4b2b145f5271690267972475beb9f89d7cd07a2d2fa316a75a9cb0ebcc4540346ef20c2e3af031efe331178d24dee91b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}