{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475275462",
    "entityType": "User",
    "nonce": "0xfa50e5170bd64b19f2a14dd67923d7021bb7c8f20d32cd7d68a80ffcd5d83267",
    "signature": "0x61a4c18176a35b6ab5d201248d938d98664eb74512b8dccc1597ffdcd1cf7e322630c0af6ef1a9ec3c3526334c14e621a11a9fb4cd2868d180b83f4ea864768f1c",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}