{
  "manageEntity": {
    "action": "Save",
    "entityId": "274685617",
    "entityType": "Track",
    "nonce": "1792423864976295842",
    "signature": "0xfdf388e1508801d53a2d8d5140e63617ce261d9b0220d30db9c31d895f2a3b23000335b0922dfb61ba9b99af7dd0b6b03afd845f93cab9b5c059be904cbd7b331b",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}