{
  "manageEntity": {
    "action": "Save",
    "entityId": "404642876",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6cca2f984af3171b5671a4135e641a852383d9c0fa853badaeed980d25092b3f",
    "signature": "0xc8e0ffd57b7e20b5ee722ef30dd41354432607189ed4baee101932b5c01a0e690903d91387ebd0d73fd8adfd728da10e03a6f046456d3ea5648a546ef88672dc1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}