{
  "manageEntity": {
    "action": "Save",
    "entityId": "2071464173",
    "entityType": "Track",
    "nonce": "0x49b74b9139839c6cbeac1df1497a9838441084c25a5912f956309e2788c5015b",
    "signature": "0x50fd1d82b06d19d8410d68fe9644ad06d3662669479711992083ba1c8ef9b18e4c3130f322cd50928ccd39440e0b7cff64356cf2829e48c33b209d29feeec2571b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}