{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x15e5d56b1dbf084a389db882e6f150648069fbf79f948c432877beea749fdf73",
    "signature": "0xbb4b5d491e391c59affbecb4d8fa637c1d0cfb2817bfb54ea07ae276517f044465eee6c110c3781763107ea65668fd79c1e21b3042a088afdc5674597f3763381b",
    "signer": "0x5138750e347394b36c8C278e2d7bDC3c1cd91fDc",
    "userId": "965634386"
  }
}