{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1437700",
    "entityType": "User",
    "nonce": "0xd80f4c638ae1f31d9107ff7986691bf06d75bfa0c5b5c2a744317f853eb8ec04",
    "signature": "0xa99e733a84ea759c90a5e769ffc2898aebe24dafba3dfb0bf264f93a4dfc909b2538d4ff15b67cc35828b8d95629b75e3cea772d495a2a8bc93d74c8c51c36f51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}