{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x00f277cba5e20cceec1df84e576cda122cf620b686926cc6fb0eaccf28d40799",
    "signature": "0x72989796b6eb71cfbaa9d22af9fa25c0041072313515fcd1f4b1051b42eb1a666178a5e4f304fecd639e1674acd32c753690ec14935f6ae49826be8d28a054641b",
    "signer": "0xf43B93bEA26D4fdE1EcCcBCACa587d6edF8bA4f1",
    "userId": "93242260"
  }
}