{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059100",
    "entityType": "Track",
    "nonce": "0xc31f701a28c0eb7aef6030b8a66230746330749371631335cf8999013dc8e29a",
    "signature": "0x99bee9d4c0ea891f43574bf7ee5013f31b3b900c0e57f6838257595adb8bab2a5930dc510ddf10d0fa5403156b0a71b36e3155f6d9c375ab4efef85ff6c048271c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}