{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0x9c2bb0ccabe9c749e278e89cdc349eebb99bd3cec7a5e1416c129c56e4d4ec2a",
    "signature": "0xde986bd304a6b44c02da387d7ed5e5cfaa07ac521f7edb4e7221af399836b6af5340396f75eeef6bf4a8167230f104b37577d1b95140a919a4a438e8c854747f1c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}