{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xabb2ac646bc0bf8cd3896ebf9749f84d3713a771633cab0dd07fa7143ff1a553",
    "signature": "0xe820bd65af8fa2e15e145c3d72f2ee37fa76b88fead469756390b869ca5103bd02d6ec27926bdbb6a855cfeb74786e80efc76d93bca6c2c5df0dd6ae8d48d80e1c",
    "signer": "0xA49Ea05Fb50d75D15fFDC8Fd7e1567FAa66E8b3c",
    "userId": "406866433"
  }
}