{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x3aed8a96b72da8657e5d4f8fd968e9ef59e0e834a37297f479cc1a70ef24b4b6",
    "signature": "0x9746aee3cde8c98403fc4f48c91e64ed4735a0c5c359505ff425f8f2aef0d84c1479c264fab8ba1f2f10add763a3cd17806aba97bf15df19d1de1e37211641521c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}