{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006124463",
    "entityType": "Track",
    "nonce": "0x285c811b65935b70a454e00049c16687163a5b652862f70ece21f353eeac4808",
    "signature": "0xb7f46bcd7c27dc0642a59abe013a62e37a403f135b3ffed40ed5d8b84c3506633387a114be016362fefec7215198e4d3e2666874efba00cee94486d9fb42851d1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}