{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122228",
    "entityType": "User",
    "nonce": "0x87b916ff04d2a6b3f685b5f4185bd1390baeca6d6b37412e8cef99e365c32592",
    "signature": "0x6c70929868e24ce1b6904b8fa32e0f8bf125aa04af7fcd41fe99a521c91f54b029cd097b4c909d16eb86136ed0ce2da7bdbd0e27c9dbe335edc246a3518e71471b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}