{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x57d7041ec4f7007c457b2ca95fcab7c7d1f9e5165c46f61466689fa3371130bb",
    "signature": "0x480899a449bf730f017fa31138c7597a4b8fb7c2bf12618d7dda41c617196c1a6323466ddef87ab9c1113b7a546baf04a87f8ab635920b9f4ef009e41a98c7291c",
    "signer": "0xa228dA0794005c958cFc691a6808417E21E60Aea",
    "userId": "151623966"
  }
}