{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb8795d70a4a26c86f042c00c93f6c085a9d354339a839367d11e540dd1005c4",
    "signature": "0x05bdeb5f8dcb69ff33377c2a43ce52f1f6b02d28e06aa4344969442519c5a7092d02e767c51fd563efabc154794571a23cf286fa36b33f4a47febea852ee9d8f1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}