{
  "manageEntity": {
    "action": "Save",
    "entityId": "835424707",
    "entityType": "Track",
    "nonce": "0xedc19039f2322f91de2ecc9f107a8db93f2bcb2b5cca95d8439ab32c38264117",
    "signature": "0xbd2eca2c9ba4dc76cb769d90950a09f1c652587f7327df49471b64a34eabde9a5d1ddec7b3d456b492e95c5139b6de31735e3b863afd675f96daa030fbf2b3cd1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}