{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xc5cf0b7cdb10e9b806ef941111f327dbc3bf97c4c0732f5794f1aa78f8ca6dee",
    "signature": "0xc2a0000e84f59a5b220ecbddbc966e61c679e4ab3a1d9d140551906a91de98512a371adf8abb3aa96f729de1b1f3f3caa2561885417dbd0709b497dac3b5a45e1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}