{
  "manageEntity": {
    "action": "Save",
    "entityId": "1837929443",
    "entityType": "Track",
    "nonce": "0xae4db8567fdb5695bb7484aaf3f90080ab5e910ae4c4973a02c5566a68b3b1f2",
    "signature": "0x700999ce9c7d7c77080dbc1d07dbf74212bf8396489ea6b76af39ad09b6d61886d8e36b7923a33250f6ba6a17a46623873e6275ffcd2b866538b07e9b2f753081b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}