{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf2a63dae778fd39ad882f48fa935bbb7f0afe2ba7fbb8f668a2d470771219059",
    "signature": "0x4bf8a6f8fb6ce8f2099690f6136c0da2ced48eb19bc108f6183572c62ea18f5b08562c42af562b6905b3e2e12e3baf3bd2d969c03e7e8fbfdccf6a8fbf0ccbb01b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}