{
  "manageEntity": {
    "action": "Save",
    "entityId": "613296690",
    "entityType": "Track",
    "nonce": "0xd755bd2bf6a034e86fc41682123e2312cd32f7dda45bbbc67c3e68e3a7432f67",
    "signature": "0xe3c5ba110146398e19f63f4f07890076be4b1524d1943eb38a640ff580d3015c1cda8a07251282606f0ab860360c1703d1329a9a6b29e3d01f31a863c17d9ffd1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}