{
  "manageEntity": {
    "action": "Save",
    "entityId": "1872170068",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5d217826d9742000fd9cef882f6101da77eeef4cc6c83f4025c9a3dbdd5885cb",
    "signature": "0x6048b59038b25ca7581b480f0c62865b17d6d3eb76d9da3ac6ee27e9159335323a45e633eb0c3d1a56506c443a6b36913f41a87bbb36798f361dba3d14fae9751c",
    "signer": "0x4A3D09CdfD42dE4C57dc67B09a40B5d9172bD69f",
    "userId": "787102835"
  }
}