{
  "manageEntity": {
    "action": "Save",
    "entityId": "62531764",
    "entityType": "Track",
    "nonce": "0xda04e30e0d149c8f7779c2bd7b28f72b487c14135094892b1b209f829204949d",
    "signature": "0x91a6ed6e4a54636e0ead2dc92d57176247d4ded6c7bb657ec114409b2455026146e922f2ce4720530810bdc859b8c6d317cb4dacc9accf24168a38078e92c6771b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}