{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025058270",
    "entityType": "Track",
    "nonce": "0xb429872bcc5ddf941d7d7cd721987e0a457b7ccd2fa4e1399c083113ed09e3d6",
    "signature": "0x13537252a809314b4e0b2da1d8fcc9ee01fceef425bdcbc58b3fca65902bd1516b6f68ca235ae86e05c0fe2fe20aa88f9fca0626038281c42ae2bbb814dbc8681c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}