{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c0796cf122f32e32d5602fa2774115f19836b5d4081f1e8a12c1e97965d63e2",
    "signature": "0x18394d59308840824bb874e7fccee1ea61e31857645901549b77b86aad8f20ae6dc528b57a14cbfc185681aceb67714cc4be5511f4308f2b97eaf58a3a5b29191c",
    "signer": "0x9433D425e40bbE9860967f260A51Bd24E44797c2",
    "userId": "448199548"
  }
}