{
  "manageEntity": {
    "action": "Save",
    "entityId": "68232932",
    "entityType": "Track",
    "nonce": "1792419424977030031",
    "signature": "0x9f117d47581d361dc684b50776cf976e84a3a7d9a75bcb225770150ef1dc51d706541090030eced5d423b0bfdf94cd9d20bddbcc2432280e8be25d71e35e618b1c",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}