{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1449671",
    "entityType": "User",
    "nonce": "0xeaf3748a38f7fab27588c0e3293f12239e248812d583e249a66b0b9c93a5b9c2",
    "signature": "0x1919561ca41ee75f44e5c7c5ff49115ea063171b300e96e3278cb349d780e59959a9d96151145bfc233f088bfc7333717f2dfe0ad0753f96d26a1786174120da1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}