{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "890815667",
    "entityType": "User",
    "nonce": "0xcd40481c06cd8cb92e1cade5cee19a9b7977b4c8a11f7e5cd1347160b2b6b346",
    "signature": "0xb78c6833c5463deb5d12a09a7de746469f3c22a2bf0d65ce461e36f419a3f73647dc58e674941596064e3a51cec8432e8143b60e307ec091e3035273861f27031b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}