{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28004",
    "entityType": "User",
    "nonce": "0x44f0486eefa4524f25d1621e710868f01c6f090515ff275066046e0d2cedf2a3",
    "signature": "0x447862bcec369292ba45574743ab0bc153f4f27896254c3a17274eebdb2ebf1345954a1f2718bf3d9942e9d71917a179ef3a170567e4bb1e4ecdcb638c0f415b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}