{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981557886",
    "entityType": "Track",
    "nonce": "0xa07ad40906b326876f7ff96d2f9040dc2cd678c6c4ac778271ca0ec22027c3ad",
    "signature": "0x382c28987f2b5910f2528d1b53289fdc439c071d8322c0a1ab417744315b694d6413021c0e38c3d9018cb44d2db5b40103f3d8874aaba7f707a423cc7d4f004b1b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}