{
  "manageEntity": {
    "action": "Save",
    "entityId": "80536091",
    "entityType": "Track",
    "nonce": "0xa71953c8bfcbf7f6cc908dadd03228ea9509c962bbfe0368ae04219c102c563a",
    "signature": "0x5e884da57195579ab426db04cb57cb144cafcb5178724dec5fbee8b847a7f8232454cab63718c380742b313778a2a0794fabf3e783f02a91409be600c04581031c",
    "signer": "0xb4A0d67357A27C413B5930Adb975d62fF238D5Fc",
    "userId": "8989850"
  }
}