{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x518c9f6ccb617ce7c3e175f9eb18dd1de25dc84770aadb23009d49cd41d97537",
    "signature": "0x06efc98a429147e1e0dce683edb40e94bcc5633d272bc8e3b462a6fd41298e9d551a80fb2374f8cc0cb50330846f01d86a05d7e0feaa20a0fbb7b1b8454e1a361b",
    "signer": "0xF978BADb562Da025f06a1182ce14a17F541Bce57",
    "userId": "486159454"
  }
}