{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "316813",
    "entityType": "User",
    "nonce": "0x5c0a5ac8f55686abdcc281ba48c0023b55cbc9ffd7f4c608290dd222a4de2856",
    "signature": "0x01e6ba9dc5d6beb7bb0e4da136e877ce22bae150157faab82395f300b1e941c55291fbceecaeb8965955c54804355fb5e27649ee0b5d16bfe80ebca7c89245be1c",
    "signer": "0x8e57c7C677d2249437F4bEb640d7aEBAa88b9C12",
    "userId": "230723724"
  }
}