{
  "manageEntity": {
    "action": "Save",
    "entityId": "1315375136",
    "entityType": "Track",
    "nonce": "1792393784474624058",
    "signature": "0x2fe44490435ad41b9e005c72a218c8fb78afb81cd1014ab31fb6774997e6225000de436ee014d07e08928d48f33cf3d9b8cbb352228bf8bb9e9d3e2d0ad306ca1c",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}