{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2918da207b591c486fd2cc693d1995fed143290dba9cd3622e655d7747524d87",
    "signature": "0xab204e705969a74eff25d6b1c87f4a9c0b906462b8063bf8a04efe5336485adb0c1841efaaecbd59bfb5b0a2931772475cdaa181cad63ca57a73729bbe7c39de1c",
    "signer": "0x559b6d77eC3Ed25461041c6cFfdFc2764f73d202",
    "userId": "370672737"
  }
}