{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344319",
    "entityType": "User",
    "nonce": "0x11c0809780ee0900e97fda7882c5c537e099f1d140ecfef2af133d8158663820",
    "signature": "0xef5330a98eb5402070b2fda994931b9ffbc6b2dafd3beae3cf621ff181defec1579a1f58e6e4cb40799649d2f6ab8438dfd86eca0d4577205749cd2e9b90e8a21c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}