{
  "manageEntity": {
    "action": "Save",
    "entityId": "711306",
    "entityType": "Track",
    "nonce": "0x960cc3b3468fc29cb192675e18cd1bb47e74a4310bd08114e25a9320df49ef53",
    "signature": "0xdfd1ee6cb0284e0500a8b5e3f05c84191dbe9340a6cb14efdf0f0b606087cc7b362062413599de1dcf77eda1333bc02e668ce951679e4f33a777b464fb135ee21b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}