{
  "manageEntity": {
    "action": "Save",
    "entityId": "1123062491",
    "entityType": "Track",
    "nonce": "0xfc36a5388fcf816567a03f2fab21074ce0f3fabd4367d6a9761f5d470bfceaa6",
    "signature": "0x54988191cfe4808bc3c0ad4f037dd5bd70c73c93261426b81b00c2ebe6d0a4ec492b1517cf2c239df23abefe09791de229524334e2ef4c362caf2f44a37e3d2b1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}