{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe69b65d9ecfe1a3eb2d900b4293c7bf2294c363b62350e537ae059a64a29abe4",
    "signature": "0x96410704746e2d2ccbd0cdf9669736291473ee9ac2f8a9c90f51281d801c8005198df6f031e6d9cdfd9571702273756822554ed7ff784ab446c37f8b3cbcf0221c",
    "signer": "0x5C40b7A4d7eFF7C2F861E6357FD69f07a7b59f7d",
    "userId": "321575597"
  }
}