{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215247",
    "entityType": "User",
    "nonce": "0xa11b1619d048fb9e3440e54fd40657f5d7e8817d440a9c909f405f79da743e3f",
    "signature": "0x4e30ed1fa57ded80998d226231682a9a2f0550c015e71a80f302a4fd3304dd396f38f2e0de42d2021579fcaa0e9384f35560f427bb7998728cd847fea8798c231b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}