{
  "manageEntity": {
    "action": "Save",
    "entityId": "1223510249",
    "entityType": "Track",
    "nonce": "0xa200150bf169d0dab45643c038e01223a4d8196dce29c15a5a5cbd632d8904e4",
    "signature": "0x7f0deaf141900abdce1090a795d56ad327a7390e57a61081d9607ea5e983910608e40dc9ed58c2ea0b4c9924931c4bd79b37cadd6617a24252c713ac531626e51b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}