{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50530",
    "entityType": "User",
    "nonce": "0x595701cb499d3fb9dab0f2b43cf79bba575db491e97b2dde51e0d550bb775012",
    "signature": "0xbfff121e935c689890be7170236e3b0056192bb060b496540442cd022b5cc01a2953579f1661efbc7cb4d233d0360ab5343a77524a1947cca201c65decb1c9b31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}