{
  "manageEntity": {
    "action": "Save",
    "entityId": "536879",
    "entityType": "Track",
    "nonce": "0x657420a2102200ab58aa26c6d6bc0a228f24560f1a425dd3b2465a11530fbef7",
    "signature": "0xce0a9eed102f0ffa3fa7f8dbecb09c657be8a78b4fdcc4b177e0a6ddd9c122601cdad1e7d7e8d584b5e6a22fe179bfcf32d3d0c7deafa48db44014e9ada57a0a1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}