{
  "manageEntity": {
    "action": "Save",
    "entityId": "2073611976",
    "entityType": "Track",
    "nonce": "0xa4586934666643458854db00463699427a7660b59d0fc6ffac7c49c22d02ffd1",
    "signature": "0x95e407a4caf15e62116958f188ccd2c5ac595dfccff53412a885296ff39eb8d41cc7a18821369d9b184ff7d31c4e27e959d39b30b8afbc9f000a6256d53a87d81b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}