{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324479",
    "entityType": "User",
    "nonce": "0x0382e303a6330d387e13e98569fe8424cd7385918ef2a73e63575e85e442fc38",
    "signature": "0x1b16dea440af8caf11be6f330974ab202bf879e7624c2cec55c04d3e2ccf5997762e7e8b6cdea5821181ca269fe5fb125d916391a4e578876ec8ea762ec2f7af1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}