{
  "manageEntity": {
    "action": "Save",
    "entityId": "108843",
    "entityType": "Track",
    "nonce": "0xcb1ba1eafd272d04ee4eead551be74119d17bf1dad6261cd05f8233c4ff41570",
    "signature": "0x44006e10a6b88ac906534be0ed2289ef0febd0627a6eb65a5fb48866977d739b008b2f85cddaf6e8972bb2bf2cf7921d291fe7f9a7d84d73a332c6abb02f4ce71b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}