{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787975550",
    "entityType": "User",
    "nonce": "0x48d5fd737fc8168ec217d85333b338b3dea67b452129dbbe04fb7706b7d58f71",
    "signature": "0xe3a1304bf98fc87cca3f7a0a11b0965607b269052928c0206a2201a7cb1912a74bfba88de7fc648b35689662b63a4ff3c033b3f8fd492f807afcea875fb96d181b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}