{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe3152d729e1ffcdc613ba4e112f47ee111ac1198e55a7a4c88987010b60c432e",
    "signature": "0xdf40da1ac2cae0e2436cf6bed650ca36a3b52ea2daf514b083284ebae265fa256a123fd8246a036b3772f76ac0f491720b358e7d95b4fe5dbbef710ad32b10b61b",
    "signer": "0x41Ec47289bee55cdAb1EF3AC41A8D7efaE392061",
    "userId": "606279898"
  }
}