{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x82db4c9ed13b041423270588efb9fcb1a689485758509e040a805d46261a8b20",
    "signature": "0x5eb5086b3466b2ec9ab5c077c498c467e0572a46ad2500a25e1da56bab4ad16715080ddee6d97eb270482a8425d07e6df3860ead4969f3d1ce407b629267e61f1c",
    "signer": "0xd82Ab08e57eD7d37BEc21c7E77611C8dB4F04E26",
    "userId": "195587496"
  }
}