{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4a26db3d3fafc72ab6197a8f04155a41c2a5cfe7bc1af5926745aec6ede5cb6c",
    "signature": "0xd639fc8bb4a8aa0934b72cdb9c3266d623b9e8a2d939d33d88a8b49e9f078b384110caab89fcd98083a0c2f35792e112cb9dc4c19360de32a69039bdee7978361c",
    "signer": "0xaf6b85544207C43b699387ea1FE2985D5E826A23",
    "userId": "932015377"
  }
}