{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078924802",
    "entityType": "Track",
    "nonce": "0x1e07bcd8cfd548749f356a04d9aeecf6b2252886fe8b602af6397fdcd24507e3",
    "signature": "0xd5116c1163c9f3e2948c8f68a4905b4f7e480ef2a3295102830356535fb4d38175e3347668d32fece0aa8f23222c0a1221fb88ac9fcc9e41f3b18cbd3c5c7d381b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}