{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617656",
    "entityType": "User",
    "nonce": "0x6a7bf44dc194aad763b595bfd48400b15fb30bc37b76d63c02820a0374a9c23e",
    "signature": "0xd40c4c30c49c9d99f424bb4f94261094d7810d1ce935f8e59c7390e320bd4cd263bf04f655140546e768271e218bc58bb7e172522d2dd86a5e9f4aa958ada6d11b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}