{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "716605",
    "entityType": "User",
    "nonce": "0xe8fa276737763a0ede010b8e82a291f18f3c2e7f458d506f2c73bf87587fd749",
    "signature": "0xb35d560f9d739def2d31a36fbc4e0d041b722fdf2cf19d40709e449d22b5bf9d5858235af78ab22e6ff489e84fce83331701d4214cffeec8998417af273cd5cf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}