{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x93936d62b26bcab8e77361917366786c436e27d0edf3e6686cde759deb40fe9e",
    "signature": "0x6fb37f2d8bee79dd93cab6cff0a83b346f1b2d2074ef1599f9632a7adf51a03e7db6a44327492f758bb8fa0bf6ecd7bea3fc393e1a46df422a3a645d5029a76c1b",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}