{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0x88466d94ec81b73aa6b1d246012e32d86c675d7c201786cd513a6a43b7884a0e",
    "signature": "0x837b3697126c87bf0b59f2b4dd5c8402a2f645cd49d82532c67e2ffbff8c06be251b61807b631cd84af431515c6a52adb49d6ec4af8260b62633372841874a331b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}