{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17448",
    "entityType": "User",
    "nonce": "0x1f4afddab24553baf0a51c9d14baf2357af8fe4dae49adedd015ad09de5e724d",
    "signature": "0xc48c94f97356a0257fd4e43b8e1802625ac67f5efb23998373ed59b212e5f0d72f9a9c4738da6868ac47a193402e29b97609e016a95511014a39c8f373cbfc1f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}