{
  "manageEntity": {
    "action": "Save",
    "entityId": "1932785661",
    "entityType": "Track",
    "nonce": "0x891b7444c95cade3686d531bb42397a4a1ad29abb42518d4b91b51110d1e0482",
    "signature": "0x992e164a196c633e76c2da8f859ce620a5cde076b03d7bb0f025ee093c508da60f1e7393a0cfb9d10a70ca42fcea413dd0e04ffc13b3ecf772cb82fafb3df21f1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}