{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf269c391a0132b90804a356971dbd458559e7451801830bc3a429d0e989b0a0d",
    "signature": "0x254509c19649d9be07846d58e1f237c56b669d5a772f23e1717886e3ab6c88b576e38efe0553afdb2f8a21c18d63baa38c443097ff99b1be26dbe6a22f43249c1b",
    "signer": "0x61d5f943Ff590F4D8d843bd8E5d34816513DE0De",
    "userId": "500234778"
  }
}