{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "480974",
    "entityType": "User",
    "nonce": "0x4ca0ae9067af98aaae4569f1e8d12c202e848dc282137ecf16bf99d3e7482f89",
    "signature": "0x8b19ad6b8a26017479981b5d2484166cfca7072772e61556ee25f14aaecd32044155fd69ecf44449c642b354eb38f4db8771dbc59d8b1ca5128f2125ddefce7c1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}