{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49421",
    "entityType": "User",
    "nonce": "0x99b56846da64cd141fa33886ea163ba4ee334a6821fcab4d6b3034b338992276",
    "signature": "0xed87c92628db5696da7a4f5e03fbe280c0e52eb04a789d3b3fc61487522e5ee369eb0190d684753b8555306fc101b6dc6ea17c0170f51ac676bdbb5a391fbf371c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}