{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367338",
    "entityType": "User",
    "nonce": "0x7af39036d6815289742fd820ca7497b5f1eaa0ed0fd753e5a1caccd07a36b542",
    "signature": "0x78de309cc8748c1721b9837ac444c32380be2023e0bc7bdcd8b09a0317920f9c47f973dc1d96e542ff0fbad2bb358e80be5b20addec178a2d8d478578beb077e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}