{
  "manageEntity": {
    "action": "Save",
    "entityId": "313689159",
    "entityType": "Track",
    "nonce": "0xdf87b12dc5a843a5d32d0a4a61a5b3698d572d83c924db1de86d15dc3cf83538",
    "signature": "0x3a3a2f936477bdbea970b7c6294f5fd18ebe87b2b01a7907515374baf2edc680169c18bb596d5778546af3ec0f933194028b0aaf10cda1ebd1be775f48c055ea1b",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}