{
  "manageEntity": {
    "action": "Save",
    "entityId": "237959562",
    "entityType": "Track",
    "nonce": "1790151562968969353",
    "signature": "0xe360ec76c88b7033b5bbee3d5c88fa4a1a03fa19e7a0f9b8b755e435248680d46b2c46862e3ef366b427782f2cf821b5561c285973b8705be9fa08f542f538481b",
    "signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
    "userId": "670307808"
  }
}