{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "261999",
    "entityType": "User",
    "nonce": "0x01f9f1dae2a467dca86789e357e736c1c053418a6daaa5cc499d33713b41ba1a",
    "signature": "0x87c6348fd9dfe911588972868655bd5caf9d94f0570df13399b41638113fccc2395bcd87e28e46009473743f359779575764eb4559aaff56f01748471649c19e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}