{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294745607",
    "entityType": "User",
    "nonce": "0xa6e3801847bf9c1a17f89f35ba43ceb38003093990534a11aa57835bcbdb3e9e",
    "signature": "0x6f93bfb4d7a8ea747743c2b622def450e534a269fe79fb9ef107dcc50fae749d6fbd3488ae20194e21cc9226da001f2bea48eda044a35ca3d14b268a32d1c5b01b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}