{
  "manageEntity": {
    "action": "Save",
    "entityId": "1486000125",
    "entityType": "Track",
    "nonce": "0xa1b256e2075ec425362b56e3412630022c8f1a106a1ab6349bd54a6835064cfe",
    "signature": "0xc4cb593725f7c106925818395e80982f0c1ccd17a39f3250a3479cadcec3196544b6417b10a9f283829a6537da5fde0970c89c885bbe5e5f9488682c51bc0d4b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}