{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73195",
    "entityType": "User",
    "nonce": "0x51e7d9c48f30142ac2b59e6de7f8b8e22b132022ba943607da6d997715022395",
    "signature": "0x699447a7c67042f023249b09c7084b974571861163c8ef8fe4a2154f46a9cef30b26b87445788d6e4f487d8d97f87f2064c717033dc37138249984440806a4bb1c",
    "signer": "0x8ce8B4fd5ED050E67C0aac70eAB0a188FD71eeC2",
    "userId": "757523374"
  }
}