{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xae62be9cd543b331249c8fd1a9dedb0e06eaa5f7881ecc143cec56fa61d28ffd",
    "signature": "0xf5b5fb4973855758824ee43f238374937efbf3dd802fc91adb0e3970a4f21b3d1fe59583fab8a0209b1d27385914e070dc82eabc3fa85efd78a48e02c0dfd61d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}