{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xf7c74748e6506cdc5bc9b1a385456bf56bf113eaa6329fcd1290e614a3c2a93f",
    "signature": "0x86bba4dfb400b78df102dc230f2f563d649a3122817f0b336bbf95d30eb92e473df72f14b65a34219d785b97db348dda93835c784861994c7ed9445ce6d4dcc21b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}