{
  "manageEntity": {
    "action": "Save",
    "entityId": "261732759",
    "entityType": "Track",
    "nonce": "0x6f1db1f0d03d6c4da673f159930ecfea8c26d3420aa76af656d54d9729c9b3c5",
    "signature": "0xee9f861c8a06ebfa374c4ddf8e0bb50eb8c4406559b4e52c146792898e9086da0172d308f2acafabfba82745015abd4eddbd05c0703da85cc508bc877a7b41e51c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}