{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0x3dbbf7ecd2526ceac7571bbb6d78def854090519127bdf9deabce7bef553398c",
    "signature": "0x3d3873f112764ef4702286b03730a1c929a3a06c33130bac3109e4a84ecc4fb544ba57ad95b759f2b3fa3f81ecedda928f76dd3d8f285fe8d94fe561cbe9ed821c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}