{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xe98e32c1dadca79dcb4310ebd08bc1a58c2a270c96dc7e16296ebd35659d079a",
    "signature": "0xb4770d32267b5417ddd4e440df5dcd25ab5504da76a4d33c70180581b57befa9063b0841f1efa3c639af898f97feb1354327a8d3f68fe1369e19b9cca7d802961b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}