{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759689169",
    "entityType": "Track",
    "nonce": "1793810770717145879",
    "signature": "0x6191d93cc11f649e1f56e9e1bd4245a4e43a2f04177f3ab4d148df5089bac4ad2a7c6af439abff56e8dc4f6d2159ad4238cfdb6d0699ce358a23c4a90000bcc01c",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}