{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x24e883abf31e154784c001d1f6a6d731c54a9b293d4968d48edff35327d2a602",
    "signature": "0xe0adf97916e5c272e1603955fb41cbc8c834185cfee20c9d765166b96a11a82f27b7939db3942443c1e01622a90bbd536deb44bb2212d56b2494efc9cbc20a541c",
    "signer": "0x61A3501FC0915E68db168ff7922e3666694F1b23",
    "userId": "875705211"
  }
}