{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0xb57375b83ef12a6ed8e408d3dcffc7d63a8c8d3d63cae33698b611d5acc04c7e",
    "signature": "0xd0005460a3fdb4bd01980e1d8b5d2d3129a0c70d07ff884d1c0fc03920b72ed347a6fff223fb388d68dfc1a0138133e49bbb7136fa33e9054d4697b18deef9e71c",
    "signer": "0x9795fdFFB0f6D8C16721D324F9bC3A50b3F7Ed44",
    "userId": "648710515"
  }
}