{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15128",
    "entityType": "User",
    "nonce": "0xb72e321bd4832a761f1e85aab28eeae05b2fe69e46a32c974d23d7ff1aaa9e8d",
    "signature": "0x7b815df3326e0c43a45af458c75c92708c7db9cb8c0c5b18ecaea3759263bc7c791f21915fda169d9745fd48ee461da80fdf6235050084219a5764a0dc3755051c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}