{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059704284",
    "entityType": "Track",
    "nonce": "0x67eeec650b8efc7f170cb0793a2ff696b76961e83eeea3402971cf6bb19deef1",
    "signature": "0x232075a7b231a241132d1e8c6e155d439c1aeca193ff9dbda94053e69badcf9c7cebe7ba9097312a08be7c66ac0ab99f18b1c1c5fbecd9014feccfafe8e1bf311c",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}