{
  "manageEntity": {
    "action": "Save",
    "entityId": "717681280",
    "entityType": "Track",
    "nonce": "0x6269d96051b3a78bf9e6f9ba7e031fa6eccc4a4229f8f195bb3b4a4bbeb78a9c",
    "signature": "0x3b2d6e105c973e66b90ea1e96da58fa830e1591905e445076bb4a99afccf28c83e0ee0dce0f992fa2fe529c73b278d7e79aac2fe22a786f63986d86e86be78aa1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}