{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63703411",
    "entityType": "User",
    "nonce": "0x0102f671137456421cc6c0e366e105b94d3c3bf30e2480193418f8a153c8f908",
    "signature": "0x437da376db93a389c38369fae9a273709fd24d916cee0d99ac8147124c0fc44715c47854fdb4674b811f181b9eb6d52df4078879816d0bf7ea42b954776408221b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}