{
  "manageEntity": {
    "action": "Save",
    "entityId": "2075591811",
    "entityType": "Track",
    "nonce": "1792831397826156660",
    "signature": "0x5de0f53c1c6839821cfa575521178de30713a9092a3643d3f58eb6dc2d751a106d89312b9ffe1d3b4f208ea6b267c7b9f6282ce366d0a92cc8109b2c1918c3c11b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}