{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174276014",
    "entityType": "Track",
    "nonce": "1792448112667521922",
    "signature": "0xa1019763f4e4964d73cf005e87d3bf3667b0501da0f1d8dbc9728272c735b9d96aa52bee4a2ec682fdf7af2921263d070d3d93b14317ae34b60fc04ba9f1a7f01b",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}