{
  "manageEntity": {
    "action": "Save",
    "entityId": "2032195188",
    "entityType": "Track",
    "nonce": "1786583199367131222",
    "signature": "0x16e70f930e3756993303e7908c1274a221fbc6dec3bbaa0a26435da36278e38c789d40173360472c85decaff322f5dd3fd157351d1a9ee12be4ece951c6fa7dd1b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}