{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe5c2709732b4e8c7ce4379e089921fa27720e3a9a322c2e68f98f09b0a5d1dca",
    "signature": "0x110841da5a497133f3aded9afb671dacaf52c9b242bbeea8c54c30a7523ce4bd5aa7fa9c0cec49a7f56429dc916785a4116b4816adcae8acf71c51a0009a3b661c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}