{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2012591",
    "entityType": "User",
    "nonce": "0xd5a48f360ab2ac863961086961985ec0da770f5594d50089e5c01d1516f13903",
    "signature": "0x8413e820393b74c50dcaeef236972425e5297e6df5a90b1f0050c5c4fa897bda1314ee138fd78aa4bec154c1689ef0b5af97d8f923dc8e87f9d2df03dc5ad9191b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}