{
  "manageEntity": {
    "action": "Save",
    "entityId": "2068365496",
    "entityType": "Track",
    "nonce": "0x6b3ea23aebc13a10a9d54ebc170c1b736d8c5d8fdc11b545cd7da6f91ac98bea",
    "signature": "0xe461999601ae791a1627cbba4d9e6c889f572f6a0060cce6a61b6a74bed70fb574bcd73e75fb8cd3daa5f08c0a08788964db5d7614f0490331921e75ce9198cb1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}