{
  "manageEntity": {
    "action": "Save",
    "entityId": "1811481870",
    "entityType": "Track",
    "nonce": "0x86620b59ff61e9da3794afe5cb92d4c932dc3768b68ac1779aab036d42c1f48f",
    "signature": "0x064fcb836a35f09eb0ce26fb02bdacab140556e73f0d4c5af65e472a2b8f7aa312da1738e8ff353fe107a2abbd98d4ba3d7414798f19c37ce6a86e61504c6a361b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}