{
  "manageEntity": {
    "action": "Save",
    "entityId": "119927",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd26c49ccfd72f2ec3a0eb07e29cc4423897b45eae2d504a914ba671f7b7836c1",
    "signature": "0xd7e07a0444aef7660cbf58cc04ff1062e6115e57ebf90271a220a890ded9f95809c4da2127b6ceb2d5be9f8f4a8ac5411cfd3115babd6b634eaf9ebda5f757e51b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}