{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x3b16aff4c42a274e6c120ccfb513df8ea66de19a0475e230ae443edecb684d0f",
    "signature": "0x30c074dece54b31e28c7e57ab0a6238824182239747d0640de27cb713014e31c172ad87842e5d4cd5937be8b5aa9f48b67dbd2a0d2db6a752e4a232185d8a5651c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}