{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0851e08f0f3531b1e473eeee5d8a9afbac605b621e33f6c748dfa80f461a3639",
    "signature": "0xc7f4621456b62abebe38e0845d5b42d6b2dcd5c994e1946c396ea62b10bd8c6246bb5f8dcbc202e9d5a61bd0072eb9a792b1dbc0cc8e05bea3909b27d7616f4a1c",
    "signer": "0xCD762c730aA47C85D88E1E0880826c7fa56F7bc2",
    "userId": "515363759"
  }
}