{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "448843",
    "entityType": "User",
    "nonce": "0xe539cb1266ac369b5c2962b6f4c54ce92d57b2d8314078c9395cdb0a8d2ada11",
    "signature": "0x5f4ef3239c6cddd2b09962b104a30fc33d3262cdbd586077e1cb04a80d7a7c4869209b6d9aa9ce1e863fd4181317baf43b33dba5f86902ac22d602df6b982a991c",
    "signer": "0xd2034C6636b4261c48403302a162304227a2BBFd",
    "userId": "39985301"
  }
}