{
  "manageEntity": {
    "action": "Save",
    "entityId": "362268",
    "entityType": "Track",
    "nonce": "0x434989bc5ba8822008d0df049ccc33f7751c49b2b631107e455a3019ea73264a",
    "signature": "0xfd8911cb535dc2e014a27f0c71ef7831671f10eff617d48413bc9ea363241d621f7d62fc5da821c08e0d2ef159266873ce0245b0bf0745ce5681e4907cf07b9f1c",
    "signer": "0x261c17dd7171Ea18B7ffF1AbB7D0495fEa0dB0ad",
    "userId": "185086709"
  }
}