{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd6d13f8c4c3ec5dbcfcc277697a89b5ebcdefabe4471ad3d1860d4d9cb8e1d09",
    "signature": "0x3671861d92cde84374386306240cd2fe1921458f1527871c4f8a6dcecbe5e5aa66e1eb56c4aa5c321a587a7040fdd7d52ac99e95beb4fc42eae4eca849c92f2f1c",
    "signer": "0xa1219745aC2428C2a2b55Dbb996B8b7e8291E4f9",
    "userId": "848512601"
  }
}