{
  "manageEntity": {
    "action": "Save",
    "entityId": "1830086911",
    "entityType": "Track",
    "nonce": "0x3d448cf324ff7e5285581fef5e1c13047794041c45495919eef20aa8e13d5297",
    "signature": "0x22ce9172219bb096f0fb95effd57956effa5e258d4f98d00aba60966e7b3412b665a183de6dd29bdba1e7f150875ab06326d12754e29382c8088b336a68d39261b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}