{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15668",
    "entityType": "User",
    "nonce": "0x066723413b7fbc41df1e7828d3504f4286f663bd9125fcaa1e217b241d4f63d0",
    "signature": "0x4698fe3d6291547be6c80a0d6e983c27fc12e1f1f49dfa2c208da8e0d33cc76c454f9c088f2a6652e49e56903b56312ec75485383c7c66df4ab22717dfefbb181c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}