{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027253832",
    "entityType": "Track",
    "nonce": "0x38ccd4831abd30a4bfff316a165516fc5a68f086dd6ea28c85c7830e3e5c3a40",
    "signature": "0xa6e730c577c2545d0ab205e2c035fd285058d49718957d7c08255150d6d7c6e0191650dff7ed05019ad1866cdbd75a8227af351e77e6336a099cd78e0f626d141c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}