{
  "manageEntity": {
    "action": "Save",
    "entityId": "2017793906",
    "entityType": "Track",
    "nonce": "0xf3297f05dcbcab07f49aeb85a10f1ea8d131054b26777a33ed37fcfd85380681",
    "signature": "0xa2d005637f05f49a618b137f198a9a14a33e28c33044dc23b3bda498a5bb27f11d02727380632823a07251ff67cf8c831951aaf29278dd2c9e936e9f51250ec51c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}