{
  "manageEntity": {
    "action": "Save",
    "entityId": "467941934",
    "entityType": "Track",
    "nonce": "0xf64ad5994aa5025f4f7ac280dce4a511abf9c3db4a531e29b86db65b6cad05c7",
    "signature": "0xa603aeb0ff1f0e23534c66297a9f9250dd4e45f7d061902dc429a869b351b79b7b80b435c036e6500bfea9d1d76dcfdd32b582381a290d2556e67a9e602ce3241b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}