{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387176254",
    "entityType": "User",
    "nonce": "0x74ec7dea9aef8b89cbce1392c915173d4afd882c0537a40a43521429e97ac517",
    "signature": "0x0711ada0e5b945e6fd0264d1be0d8bb5ade71d291d3f53e95dcf5b85dd391c306aba8f8f3423d9c50c9f3715f23078d0ed73c811c8e9a5d2256b40fe2d2294521b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}