{
  "manageEntity": {
    "action": "Save",
    "entityId": "518432",
    "entityType": "Track",
    "nonce": "0xdf83f1cc9224a7de03bd628521c2e2f37ec35fab65791df745d57948d8f04d95",
    "signature": "0xc5a36668dcdf92cb20751ba59985ff65d9b9dec225baa37c110f27c9318aeb2f247642ee14abcf5f7e0c83ed8944d3fd384f21a1d808fc3d58828d50f0c3c3771b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}