{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0xb354d041a5fea94f72a70198e1604bc184d584a364ae8809de0100d3b4dcdb48",
    "signature": "0xe06fe20b55ab24b7e6f716630c6dfb817b0628c2c4a7d232c8630ffc7dcda9ed53757bcd86f6d28c3c63f89dd17573fa672297798f9a82d242fed316155db0141c",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}