{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "198019",
    "entityType": "User",
    "nonce": "0x26b6d3d29e82775ee64ddafd64289f326c4b1ddb87b634220b6f01ea929b6232",
    "signature": "0x0409e488e32f0f4f25d58d3a5650e64cf6e7fbc8244d741132619d7edb31fc587af4bf9b7e74400e44c65b1dc32d8553ac2a62dc22e76d2ddfc450085fae398a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}