{
  "manageEntity": {
    "action": "Save",
    "entityId": "1012116",
    "entityType": "Track",
    "nonce": "0xe115e1115f25e1889b6b8070095f47b089a1f0f3b19caf6e7115e5c4e103a914",
    "signature": "0x393c53e44a2295a69c8765b767a09bea846cf78e01b5addeb13a19954d614ab317bda19fda4d60e4371cbd8a3caa924a51b04461b1e6f1a7b9d9bf48e37cc6921c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}