{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3242110a29e093dd457428d0e395312765c560ca45ce8a18913408fad4843dbd",
    "signature": "0x343bebdd97e5de95f5cc0de38131b24cde847a5badb0ba5f63bd4d8dd8e2f98a13a87831fff0b6cba24880c098720b9534b963b5fbcb979570bc2b8076ea03481c",
    "signer": "0x8F5412De2969476FE09564D746Bcce159b1e37b3",
    "userId": "227030129"
  }
}