{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0xbaacd4f8549e34c17fbbfdd261a45f3d473d3524f3390535ed9d96e6fe59c464",
    "signature": "0x194b7153e077a5fd8d79e3ce937475d463be358a6f21e2b14e5063ca0aa04fe22fc372c346f1c76bdd52baef36c533126f56cfb246d91f2a2d38dc2fe858e6fc1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}