{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631756877",
    "entityType": "User",
    "nonce": "0x1bb3d57319d946b58d535a52e4e667d91d364e0493a5a89eecec6916b1077683",
    "signature": "0x52d52b5666f98e4753c652e2d44de7a745f8f1f8ff865ecf3e86d07a3a6e568f215641553633d5ef23fc680de6e1e6c9d51ca785e362c9674c8b62c4388bfd791b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}