{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37939",
    "entityType": "User",
    "nonce": "0x5aad897169486916bef319f429dca9f1b27e0f394915e7651e0916a82e78733b",
    "signature": "0x953a619bfe2964945a384302273451c448250b030b5d31645b604726010520412781dedf29d9b75731f963e59e5464e72193dd75a73f7563ec18e0bcf22c4a1a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}